ARM: shmobile: move custom gpio functions to sh-gpio.h

Move custom shmobile gpio code to a sh-gpio.h to remove the dependency
on mach/gpio.h. shmobile always uses gpiolib, so we can remove
__GPIOLIB_COMPLEX define from mach/gpio.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>

arch/arm/mach-shmobile/board-mackerel.c

@@ -64,6 +64,8 @@
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
 
+#include "sh-gpio.h"
+
 /*
  * Address	Interface		BusWidth	note
  * ------------------------------------------------------------------