[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-iop33x/uart.c b/arch/arm/mach-iop33x/uart.c
index 8c21870..cdae24e 100644
--- a/arch/arm/mach-iop33x/uart.c
+++ b/arch/arm/mach-iop33x/uart.c
@@ -17,7 +17,7 @@
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/mach/map.h>