Add support for RGBA_8888 pixel format

Change-Id: Ia15d49e51cad5bc8a3291975e1ff515a2b1c419c
diff --git a/minui.old/graphics_overlay.c b/minui.old/graphics_overlay.c
index d793b57..c42e9c1 100644
--- a/minui.old/graphics_overlay.c
+++ b/minui.old/graphics_overlay.c
@@ -72,6 +72,8 @@
     int format = MDP_RGB_565;
 #if defined(RECOVERY_BGRA)
     format = MDP_BGRA_8888;
+#elif defined(RECOVERY_RGBA)
+    format = MDP_RGBA_8888;
 #elif defined(RECOVERY_RGBX)
     format = MDP_RGBA_8888;
 #endif