[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-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
index ce8470f..e88d417 100644
--- a/arch/arm/mach-rpc/riscpc.c
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -18,9 +18,9 @@
 #include <linux/device.h>
 #include <linux/serial_8250.h>
 #include <linux/ata_platform.h>
+#include <linux/io.h>
 
 #include <asm/elf.h>
-#include <asm/io.h>
 #include <asm/mach-types.h>
 #include <mach/hardware.h>
 #include <asm/page.h>