[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-s3c2410/clock.c b/arch/arm/mach-s3c2410/clock.c
index 1322851..fef646c 100644
--- a/arch/arm/mach-s3c2410/clock.c
+++ b/arch/arm/mach-s3c2410/clock.c
@@ -31,11 +31,11 @@
 #include <linux/mutex.h>
 #include <linux/delay.h>
 #include <linux/serial_core.h>
+#include <linux/io.h>
 
 #include <asm/mach/map.h>
 
 #include <mach/hardware.h>
-#include <asm/io.h>
 
 #include <asm/plat-s3c/regs-serial.h>
 #include <mach/regs-clock.h>