davinci: whitespace cleanups to sync w/upstream

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/include/mach/system.h

@@ -11,7 +11,8 @@
 #ifndef __ASM_ARCH_SYSTEM_H
 #define __ASM_ARCH_SYSTEM_H
 
-#include <asm/io.h>
+#include <linux/io.h>
+#include <mach/hardware.h>
 
 extern void davinci_watchdog_reset(void);