[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-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index 3c8383d..172299a 100644
--- a/arch/arm/mach-integrator/impd1.c
+++ b/arch/arm/mach-integrator/impd1.c
@@ -20,8 +20,8 @@
 #include <linux/mm.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/clcd.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <asm/hardware/icst525.h>
 #include <mach/lm.h>
 #include <mach/impd1.h>