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

exynos4/hal/include/graphics.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * pixel format definitions
+ */
+
+enum {
+    /*
+     * "linear" color pixel formats:
+     *
+     * The pixel formats below contain sRGB data but are otherwise treated
+     * as linear formats, i.e.: no special operation is performed when
+     * reading or writing into a buffer in one of these formats
+     */
+    HAL_PIXEL_FORMAT_RGBA_5551          = 6,
+    HAL_PIXEL_FORMAT_RGBA_4444          = 7,
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+/* LEGACY_SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */

exynos4/hal/include/sec_utils.h

@@ -22,6 +22,7 @@
 //---------------------------------------------------------//
 
 #include <hardware/hardware.h>
+#include "graphics.h"
 #include "sec_format.h"
 
 #ifdef __cplusplus

exynos4/hal/libgralloc_ump/alloc_device.cpp

@@ -36,6 +36,7 @@
 #include <hardware/hardware.h>
 #include <hardware/gralloc.h>
 #include "sec_format.h"
+#include "graphics.h"
 
 #include "gralloc_priv.h"
 #include "gralloc_helper.h"