hal: Add nv12_tiled/nv21 pixel format constants

Change-Id: I6a906cf9fb1539c1876f3737b409ed0598075c8e
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/include/hardware/hardware.h b/include/hardware/hardware.h
index ee5123d..55d7553 100644
--- a/include/hardware/hardware.h
+++ b/include/hardware/hardware.h
@@ -137,7 +137,10 @@
     HAL_PIXEL_FORMAT_YCbCr_422_I  = 0x14,
     HAL_PIXEL_FORMAT_YCbCr_420_I  = 0x15,
     HAL_PIXEL_FORMAT_CbYCrY_422_I = 0x16,
-    HAL_PIXEL_FORMAT_CbYCrY_420_I = 0x17
+    HAL_PIXEL_FORMAT_CbYCrY_420_I = 0x17,
+    HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED = 0x20,
+    HAL_PIXEL_FORMAT_YCrCb_420_SP       = 0x21,
+    HAL_PIXEL_FORMAT_YCrCb_420_SP_TILED = 0x22,
 };