[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-imx/clock.c b/arch/arm/mach-imx/clock.c
index 4b4230d..7ec60fc 100644
--- a/arch/arm/mach-imx/clock.c
+++ b/arch/arm/mach-imx/clock.c
@@ -21,8 +21,8 @@
 #include <linux/list.h>
 #include <linux/math64.h>
 #include <linux/err.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <mach/imx-regs.h>
 
 /*