Make it possible to build gralloc_drm.

third_party/hwcplus/include/vendor/gralloc_drm.h

Index: third_party/hwcplus/include/vendor/gralloc_drm.h
diff --git a/third_party/hwcplus/include/vendor/gralloc_drm.h b/third_party/hwcplus/include/vendor/gralloc_drm.h
new file mode 100644
index 0000000000000000000000000000000000000000..355e207e048b2385d36a45494b84f4f95eb45af5
--- /dev/null
+++ b/third_party/hwcplus/include/vendor/gralloc_drm.h
@@ -0,0 +1,31 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef VENDOR_GRALLOCDRM_H
+#define VENDOR_GRALLOCDRM_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+// As defined by the android-x86 implementation of gralloc_drm.
+
+// pixel format definitions
+enum {
+    HAL_PIXEL_FORMAT_DRM_NV12 = 0x102,
+};
+
+
+// used with the 'perform' method of gralloc_module_t
+enum {
+    GRALLOC_MODULE_PERFORM_GET_DRM_FD                = 0x80000002,
+    GRALLOC_MODULE_PERFORM_GET_DRM_MAGIC             = 0x80000003,
+    GRALLOC_MODULE_PERFORM_AUTH_DRM_MAGIC            = 0x80000004,
+    GRALLOC_MODULE_PERFORM_ENTER_VT                  = 0x80000005,
+    GRALLOC_MODULE_PERFORM_LEAVE_VT                  = 0x80000006,
+};
+
+__END_DECLS
+
+#endif /* VENDOR_GRALLOCDRM_H */