[ARM] Include asm/hardware.h instead of asm/arch/hardware.h

Rationalise hardware.h include.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/arch-omap/system.h b/include/asm-arm/arch-omap/system.h
index b43cdd2..9af415d 100644
--- a/include/asm-arm/arch-omap/system.h
+++ b/include/asm-arm/arch-omap/system.h
@@ -7,7 +7,7 @@
 #include <linux/config.h>
 #include <asm/mach-types.h>
 #include <asm/hardware/clock.h>
-#include <asm/arch/hardware.h>
+#include <asm/hardware.h>
 #include <asm/arch/prcm.h>
 
 #ifndef CONFIG_MACH_VOICEBLUE