[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-netx/pfifo.c b/arch/arm/mach-netx/pfifo.c
index 19ae0a7..0398494 100644
--- a/arch/arm/mach-netx/pfifo.c
+++ b/arch/arm/mach-netx/pfifo.c
@@ -20,8 +20,8 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <mach/hardware.h>
 #include <mach/netx-regs.h>
 #include <mach/pfifo.h>