Fix these compiler warnings:

arch/m68knommu/platform/532x/gpio.c:35:3: warning: initialisation makes pointer from integer without a cast
arch/m68knommu/platform/532x/gpio.c:36:3: warning: initialisation makes pointer from integer without a cast
arch/m68knommu/platform/532x/gpio.c:37:3: warning: initialisation makes pointer from integer without a cast
arch/m68knommu/platform/532x/gpio.c:51:3: warning: initialisation makes pointer from integer without a cast
arch/m68knommu/platform/532x/gpio.c:52:3: warning: initialisation makes pointer from integer without a cast
arch/m68knommu/platform/532x/gpio.c:53:3: warning: initialisation makes pointer from integer without a cast
arch/m68knommu/platform/532x/gpio.c:54:3: warning: initialisation makes pointer from integer without a cast
...
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>