[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/plat-iop/pci.c b/arch/arm/plat-iop/pci.c
index 54708bf..77fa7cc 100644
--- a/arch/arm/plat-iop/pci.c
+++ b/arch/arm/plat-iop/pci.c
@@ -17,7 +17,7 @@
 #include <linux/mm.h>
 #include <linux/init.h>
 #include <linux/ioport.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/irq.h>
 #include <asm/signal.h>
 #include <asm/system.h>