Add C2D_COLOR_FORMAT_420_TP10 to C2D_YUV_FORMAT

* It seems like CAF forgot to include it in public HALs,
  breaking compilation for libc2dcolorconvert target.

Change-Id: I0e3efc0eb6eccaa250e24f1056cc3db8935e5821
diff --git a/libcopybit/c2d2.h b/libcopybit/c2d2.h
index 315a3ba..821a6d5 100644
--- a/libcopybit/c2d2.h
+++ b/libcopybit/c2d2.h
@@ -207,6 +207,7 @@
     C2D_COLOR_FORMAT_422_Y42B     = 174,
 
     C2D_COLOR_FORMAT_800_Y800     = 190,
+    C2D_COLOR_FORMAT_420_TP10     = 191,
 
 } C2D_YUV_FORMAT;