[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/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 9ef15b3..196a956 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -13,10 +13,10 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
 #include <asm/mach/irq.h>
 #include <asm/irq.h>
-#include <asm/io.h>
 
 #define INTC_REVISION	0x0000
 #define INTC_SYSCONFIG	0x0010