display-hal: Add support for P010 ubwc format

This patch adds support for handling P010 ubwc format in display-hal
libs.

Change-Id: I1c7489be859a608566240c3b6722c84bb9a468ca
CRs-fixed: 2018756
diff --git a/libgralloc1/gralloc_priv.h b/libgralloc1/gralloc_priv.h
index b558975..ea2d57c 100644
--- a/libgralloc1/gralloc_priv.h
+++ b/libgralloc1/gralloc_priv.h
@@ -127,6 +127,7 @@
 #define HAL_PIXEL_FORMAT_BGRX_1010102 0x11C
 #define HAL_PIXEL_FORMAT_XBGR_2101010 0x11D
 #define HAL_PIXEL_FORMAT_YCbCr_420_P010 0x11F
+#define HAL_PIXEL_FORMAT_YCbCr_420_P010_UBWC 0x124
 
 #define HAL_PIXEL_FORMAT_INTERLACE 0x180