ARM: 7063/1: Orion: gpio: add missing include of linux/types.h

This patch adds missing include of linux/types.h to fix below build error.

CC arch/arm/mach-mv78xx0/mpp.o
In file included from arch/arm/mach-mv78xx0/include/mach/gpio.h:9,
from /home/axel/repos/git/linux-2.6/arch/arm/include/asm/gpio.h:5,
from include/linux/gpio.h:18,
from arch/arm/mach-mv78xx0/mpp.c:10:
arch/arm/plat-orion/include/plat/gpio.h:28: error: expected declaration specifiers or '...' before 'u32'
make[1]: *** [arch/arm/mach-mv78xx0/mpp.o] Error 1
make: *** [arch/arm/mach-mv78xx0] Error 2

Signed-off-by: Axel Lin <[e-mail]>
Reviewed-by: Peter Huewe <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

arch/arm/plat-orion/include/plat/gpio.h

···
 #define __PLAT_GPIO_H
 
 #include <linux/init.h>
+#include <linux/types.h>
 
 /*
  * Orion-specific GPIO API extensions.