[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-pnx4008/irq.c b/arch/arm/mach-pnx4008/irq.c
index 5c4f55a..a9ce02b 100644
--- a/arch/arm/mach-pnx4008/irq.c
+++ b/arch/arm/mach-pnx4008/irq.c
@@ -23,8 +23,8 @@
 #include <linux/ioport.h>
 #include <linux/device.h>
 #include <linux/irq.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
-#include <asm/io.h>
 #include <asm/setup.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>