[ARM] pxa: move GPIO register definitions into <mach/gpio.h>

This makes gpio.c fully independent of pxa-regs.h (except for the
virtual address of the registers).

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>

arch/arm/mach-pxa/generic.c

@@ -26,8 +26,8 @@
 #include <asm/mach/map.h>
 #include <asm/mach-types.h>
 
-#include <mach/pxa-regs.h>
 #include <mach/reset.h>
+#include <mach/gpio.h>
 #include <mach/pxa2xx-gpio.h>
 
 #include "generic.h"