Include gralloc sources

Change-Id: I1c77c89ea568ca69732b507ebab9f1696dec9398
Signed-off-by: Vishal Bhoj <vishal.bhoj@linaro.org>
diff --git a/gralloc/gralloc_helper.h b/gralloc/gralloc_helper.h
new file mode 100644
index 0000000..c8378f8
--- /dev/null
+++ b/gralloc/gralloc_helper.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2010 ARM Limited. All rights reserved.
+ *
+ * Copyright (C) 2008 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.
+ */
+
+#ifndef GRALLOC_HELPER_H_
+#define GRALLOC_HELPER_H_
+
+#include <sys/mman.h>
+
+inline size_t round_up_to_page_size(size_t x)
+{
+	return (x + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+}
+
+#endif /* GRALLOC_HELPER_H_ */