configs/cubieboard2: U-Boot needs Python3 & OpenSSL

After update of the U-Boot [1] we were missing dependency on Python3,
and so were seeing failures like in [2]:
------------------------->8--------------------
  HOSTLD  scripts/dtc/dtc
scripts/dtc/pylibfdt/libfdt_wrap.c:154:11: fatal error: Python.h: No such file or directory
  154 | # include <Python.h>
      |           ^~~~~~~~~~
compilation terminated.
error: command '/usr/bin/gcc' failed with exit code 1
------------------------->8--------------------

So that get fixed with "BR2_TARGET_UBOOT_NEEDS_PYTHON3=y".
And then once we use Python3, we also need OpenSSL, similarly to [3]
and the likes. So do it with "BR2_TARGET_UBOOT_NEEDS_OPENSSL=y".

Hopefully now all starts to build w/o any issues.

And while at it let's add a bit more structure to the config!

[1] https://git.buildroot.net/buildroot/commit/?id=06f10a88f30b73aaea5c0e0888d7ba9d9a6420f3
[2] https://gitlab.com/buildroot.org/buildroot/-/jobs/1946650570
[3] https://git.buildroot.net/buildroot/commit/?id=cf2a7663ccc6089e98e0d6ec39fa8623749c0c24

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

---

P.S. I didn't see that problem on the U-Boot bump, as I built all
locally and quite obviously had Python3 and all the headers installed
in the system.

---
 configs/cubieboard2_defconfig | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

Alexey, All,

On 2022-01-17 22:20 +0300, Alexey Brodkin via buildroot spake thusly:
> After update of the U-Boot [1] we were missing dependency on Python3,
> and so were seeing failures like in [2]:
> ------------------------->8--------------------
>   HOSTLD  scripts/dtc/dtc
> scripts/dtc/pylibfdt/libfdt_wrap.c:154:11: fatal error: Python.h: No such file or directory
>   154 | # include <Python.h>
>       |           ^~~~~~~~~~
> compilation terminated.
> error: command '/usr/bin/gcc' failed with exit code 1
> ------------------------->8--------------------
> 
> So that get fixed with "BR2_TARGET_UBOOT_NEEDS_PYTHON3=y".
> And then once we use Python3, we also need OpenSSL, similarly to [3]
> and the likes. So do it with "BR2_TARGET_UBOOT_NEEDS_OPENSSL=y".
> 
> Hopefully now all starts to build w/o any issues.
> 
> And while at it let's add a bit more structure to the config!
> 
> [1] https://git.buildroot.net/buildroot/commit/?id=06f10a88f30b73aaea5c0e0888d7ba9d9a6420f3
> [2] https://gitlab.com/buildroot.org/buildroot/-/jobs/1946650570
> [3] https://git.buildroot.net/buildroot/commit/?id=cf2a7663ccc6089e98e0d6ec39fa8623749c0c24
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Applied to master, thanks.

> ---
> 
> P.S. I didn't see that problem on the U-Boot bump, as I built all
> locally and quite obviously had Python3 and all the headers installed
> in the system.

Yeah, happens to each and all of us. ;-)

Regards,
Yann E. MORIN.

> ---
>  configs/cubieboard2_defconfig | 22 ++++++++++++++++------
>  1 file changed, 16 insertions(+), 6 deletions(-)
> 
> diff --git a/configs/cubieboard2_defconfig b/configs/cubieboard2_defconfig
> index a9356295c1..18337fac72 100644
> --- a/configs/cubieboard2_defconfig
> +++ b/configs/cubieboard2_defconfig
> @@ -1,32 +1,42 @@
> +# Architecture
>  BR2_arm=y
>  BR2_cortex_a7=y
>  BR2_ARM_FPU_NEON_VFPV4=y
> +
>  # Linux headers same as kernel, a 5.15 series
>  BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
> -BR2_TARGET_GENERIC_HOSTNAME="Cubieboard2"
> -BR2_TARGET_GENERIC_ISSUE="Welcome to Cubieboard2!"
> -BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
> -BR2_ROOTFS_POST_IMAGE_SCRIPT="board/cubietech/cubieboard2/post-image.sh"
> +
> +# Kernel
>  BR2_LINUX_KERNEL=y
>  BR2_LINUX_KERNEL_CUSTOM_VERSION=y
>  BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.15.11"
>  BR2_LINUX_KERNEL_DEFCONFIG="multi_v7"
>  BR2_LINUX_KERNEL_DTS_SUPPORT=y
>  BR2_LINUX_KERNEL_INTREE_DTS_NAME="sun7i-a20-cubieboard2"
> -BR2_TARGET_ROOTFS_EXT2=y
> -BR2_TARGET_ROOTFS_EXT2_4=y
> +
> +# Bootloader
>  BR2_TARGET_UBOOT=y
>  BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
>  BR2_TARGET_UBOOT_CUSTOM_VERSION=y
>  BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2021.10"
>  BR2_TARGET_UBOOT_BOARD_DEFCONFIG="Cubieboard2"
>  BR2_TARGET_UBOOT_NEEDS_DTC=y
> +BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
>  BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
> +BR2_TARGET_UBOOT_NEEDS_PYTHON3=y
>  BR2_TARGET_UBOOT_SPL=y
>  BR2_TARGET_UBOOT_SPL_NAME="u-boot-sunxi-with-spl.bin"
>  BR2_PACKAGE_HOST_UBOOT_TOOLS=y
>  BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT=y
>  BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT_SOURCE="board/cubietech/cubieboard2/boot.cmd"
> +
> +# System
> +BR2_TARGET_GENERIC_HOSTNAME="Cubieboard2"
> +BR2_TARGET_GENERIC_ISSUE="Welcome to Cubieboard2!"
> +BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
> +BR2_TARGET_ROOTFS_EXT2=y
> +BR2_TARGET_ROOTFS_EXT2_4=y
> +BR2_ROOTFS_POST_IMAGE_SCRIPT="board/cubietech/cubieboard2/post-image.sh"
>  BR2_PACKAGE_HOST_DOSFSTOOLS=y
>  BR2_PACKAGE_HOST_GENIMAGE=y
>  BR2_PACKAGE_HOST_MTOOLS=y
> -- 
> 2.25.1
> 
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