Disintegrate asm/system.h for ARM

Disintegrate asm/system.h for ARM.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Russell King <linux@arm.linux.org.uk>
cc: linux-arm-kernel@lists.infradead.org
diff --git a/arch/arm/include/asm/cp15.h b/arch/arm/include/asm/cp15.h
index 3dabd8dd..5ef4d80 100644
--- a/arch/arm/include/asm/cp15.h
+++ b/arch/arm/include/asm/cp15.h
@@ -1,7 +1,7 @@
 #ifndef __ASM_ARM_CP15_H
 #define __ASM_ARM_CP15_H
 
-#include <asm/system.h>
+#include <asm/barrier.h>
 
 /*
  * CR1 bits (CP#15 CR1)