[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-msm/dma.c b/arch/arm/mach-msm/dma.c
index 9de0826..0c8f252 100644
--- a/arch/arm/mach-msm/dma.c
+++ b/arch/arm/mach-msm/dma.c
@@ -13,7 +13,7 @@
  *
  */
 
-#include <asm/io.h>
+#include <linux/io.h>
 #include <linux/interrupt.h>
 #include <mach/dma.h>