exynos4: Fix build of hwc and gralloc

HAL_PIXEL_FORMAT_RGBA_5551 and HAL_PIXEL_FORMAT_RGBA_4444 are used
by our hwc and gralloc, but they no longer exist in /system/core/include,
so we are moving these two formats to the hardware specific repo

Change-Id: I1c214af3b9819290173d2d60122d45a8ac635faf
diff --git a/exynos4/hal/include/sec_utils.h b/exynos4/hal/include/sec_utils.h
index 046e141..0b52b5c 100644
--- a/exynos4/hal/include/sec_utils.h
+++ b/exynos4/hal/include/sec_utils.h
@@ -22,6 +22,7 @@
 //---------------------------------------------------------//
 
 #include <hardware/hardware.h>
+#include "graphics.h"
 #include "sec_format.h"
 
 #ifdef __cplusplus