display: Add support for NV21_ENCODEABLE format.

Change-Id: I37beee2f460aee819e158414e220adb8a1e9dbfc
CRs-Fixed: 2592164
diff --git a/gralloc/gr_adreno_info.cpp b/gralloc/gr_adreno_info.cpp
index 64c74c6..d33f7db 100644
--- a/gralloc/gr_adreno_info.cpp
+++ b/gralloc/gr_adreno_info.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2011-2018, 2020 The Linux Foundation. All rights reserved.
 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -214,6 +214,8 @@
        return ADRENO_PIXELFORMAT_R16G16B16A16_FLOAT;
     case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
       return ADRENO_PIXELFORMAT_NV12;
+    case HAL_PIXEL_FORMAT_NV21_ENCODEABLE:
+      return ADRENO_PIXELFORMAT_NV21;
     case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
     case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
       return ADRENO_PIXELFORMAT_NV12_EXT;