[ARM] Convert asm/io.h to linux/io.h

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-omap/include/mach/gpio.h b/arch/arm/plat-omap/include/mach/gpio.h
index 94ce278..8c71e28 100644
--- a/arch/arm/plat-omap/include/mach/gpio.h
+++ b/arch/arm/plat-omap/include/mach/gpio.h
@@ -26,8 +26,8 @@
 #ifndef __ASM_ARCH_OMAP_GPIO_H
 #define __ASM_ARCH_OMAP_GPIO_H
 
+#include <linux/io.h>
 #include <mach/irqs.h>
-#include <asm/io.h>
 
 #define OMAP_MPUIO_BASE			(void __iomem *)0xfffb5000