[ARM] 4961/1: gpiolib support for SA-1100 architecture

This adds gpiolib support for the SA-1100 arch:
 - Move all GPIO API functions from generic.c into gpio.c
 - Convert all gpio functions into gpiolib callbacks.

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-sa1100/generic.h

@@ -9,6 +9,7 @@ struct sys_timer;
 extern struct sys_timer sa1100_timer;
 extern void __init sa1100_map_io(void);
 extern void __init sa1100_init_irq(void);
+extern void __init sa1100_init_gpio(void);
 
 #define SET_BANK(__nr,__start,__size) \
 	mi->bank[__nr].start = (__start), \