[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/include/mach/system.h b/arch/arm/mach-netx/include/mach/system.h
index 27d8ef8..6c1023b 100644
--- a/arch/arm/mach-netx/include/mach/system.h
+++ b/arch/arm/mach-netx/include/mach/system.h
@@ -19,7 +19,7 @@
 #ifndef __ASM_ARCH_SYSTEM_H
 #define __ASM_ARCH_SYSTEM_H
 
-#include <asm/io.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
 #include "netx-regs.h"