Make it possible to build gralloc_drm.

third_party/hwcplus/include/system/graphics.h

 /*
  * 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
@@ skipping 219 matching lines @@
      * struct android_ycbcr (below) is the the struct used to describe it.
      *
      * This format must be accepted by the gralloc module when
      * USAGE_HW_CAMERA_WRITE and USAGE_SW_READ_* are set.
      *
      * This format is locked for use by gralloc's (*lock_ycbcr) method, and
      * locking with the (*lock) method will return an error.
      */
     HAL_PIXEL_FORMAT_YCbCr_420_888 = 0x23,
 
+    /*
+     * DRM specific format used by drm_gralloc
+     */
+    HAL_PIXEL_FORMAT_DRM_NV12 = 0x102,
+
     /* Legacy formats (deprecated), used by ImageFormat.java */
     HAL_PIXEL_FORMAT_YCbCr_422_SP       = 0x10, // NV16
     HAL_PIXEL_FORMAT_YCrCb_420_SP       = 0x11, // NV21
     HAL_PIXEL_FORMAT_YCbCr_422_I        = 0x14, // YUY2
 };
 
 /*
  * Structure for describing YCbCr formats for consumption by applications.
  * This is used with HAL_PIXEL_FORMAT_YCbCr_*_888.
  *
@@ skipping 48 matching lines @@
     HAL_TRANSFORM_ROT_270   = 0x07,
     /* don't use. see system/window.h */
     HAL_TRANSFORM_RESERVED  = 0x08,
 };
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */