ARM: imx: fix build breakage in hotplug.c

Since commit bca7a5a (ARM: cpu hotplug: remove majority of cache
flushing from platforms) hotplug.c fails to compile (e.g. with
imx_v6_v7_defconfig) with:

	arch/arm/mach-imx/common.h:100:29: warning: 'struct pt_regs' declared inside parameter list [enabled by default]
	arch/arm/mach-imx/hotplug.c: In function 'imx_cpu_die':
	arch/arm/mach-imx/hotplug.c:53:2: error: implicit declaration of function 'cpu_do_idle' [-Werror=implicit-function-declaration]
	arch/arm/mach-imx/hotplug.c: In function 'imx_cpu_kill':
	arch/arm/mach-imx/hotplug.c:58:26: error: 'jiffies' undeclared (first use in this function)
	arch/arm/mach-imx/hotplug.c:58:26: note: each undeclared identifier is reported only once for each function it appears in
	arch/arm/mach-imx/hotplug.c:58:2: error: implicit declaration of function 'msecs_to_jiffies' [-Werror=implicit-function-declaration]
	arch/arm/mach-imx/hotplug.c:61:3: error: implicit declaration of function 'time_after' [-Werror=implicit-function-declaration]
	cc1: some warnings being treated as errors

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Hello Russell,

This patch applies on top of Linus' or your master branch.

Best regards
Uwe

 arch/arm/mach-imx/common.h  | 2 ++
 arch/arm/mach-imx/hotplug.c | 2 ++
 2 files changed, 4 insertions(+)

Hello,

On Wed, May 08, 2013 at 09:33:11AM +0200, Uwe Kleine-König wrote:
> Since commit bca7a5a (ARM: cpu hotplug: remove majority of cache
> flushing from platforms) hotplug.c fails to compile (e.g. with
> imx_v6_v7_defconfig) with:
> 
> 	arch/arm/mach-imx/common.h:100:29: warning: 'struct pt_regs' declared inside parameter list [enabled by default]
> 	arch/arm/mach-imx/hotplug.c: In function 'imx_cpu_die':
> 	arch/arm/mach-imx/hotplug.c:53:2: error: implicit declaration of function 'cpu_do_idle' [-Werror=implicit-function-declaration]
> 	arch/arm/mach-imx/hotplug.c: In function 'imx_cpu_kill':
> 	arch/arm/mach-imx/hotplug.c:58:26: error: 'jiffies' undeclared (first use in this function)
> 	arch/arm/mach-imx/hotplug.c:58:26: note: each undeclared identifier is reported only once for each function it appears in
> 	arch/arm/mach-imx/hotplug.c:58:2: error: implicit declaration of function 'msecs_to_jiffies' [-Werror=implicit-function-declaration]
> 	arch/arm/mach-imx/hotplug.c:61:3: error: implicit declaration of function 'time_after' [-Werror=implicit-function-declaration]
> 	cc1: some warnings being treated as errors
> 
> Cc: Russell King <rmk+kernel@arm.linux.org.uk>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
> Hello Russell,
> 
> This patch applies on top of Linus' or your master branch.
> 
> Best regards
> Uwe
> 
>  arch/arm/mach-imx/common.h  | 2 ++
>  arch/arm/mach-imx/hotplug.c | 2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
> index 5bf4a97..5241d99b 100644
> --- a/arch/arm/mach-imx/common.h
> +++ b/arch/arm/mach-imx/common.h
> @@ -96,6 +96,8 @@ enum mx3_cpu_pwr_mode {
>  extern void mx3_cpu_lp_set(enum mx3_cpu_pwr_mode mode);
>  extern void imx_print_silicon_rev(const char *cpu, int srev);
>  
> +struct pt_regs;
> +
>  void avic_handle_irq(struct pt_regs *);
>  void tzic_handle_irq(struct pt_regs *);
>  
> diff --git a/arch/arm/mach-imx/hotplug.c b/arch/arm/mach-imx/hotplug.c
> index 5e91112..3daf1ed 100644
> --- a/arch/arm/mach-imx/hotplug.c
> +++ b/arch/arm/mach-imx/hotplug.c
> @@ -11,7 +11,9 @@
>   */
>  
>  #include <linux/errno.h>
> +#include <linux/jiffies.h>
>  #include <asm/cp15.h>
> +#include <asm/proc-fns.h>
>  
>  #include "common.h"
I just noticed that this patch was already posted by Shawn last week[1].

[1] http://www.spinics.net/lists/arm-kernel/msg241316.html