copybit: Enable RB Swap for RGB_888

Enable swapping of R & B color components
for RGB_888 format, otherwise C2D renders
wrong output.

Change-Id: Ib1670418a588e09e8168a04c9f8b8022a84e65e8
CRs-fixed: 672033
diff --git a/libcopybit/copybit_c2d.cpp b/libcopybit/copybit_c2d.cpp
index 771d483..7e2c500 100644
--- a/libcopybit/copybit_c2d.cpp
+++ b/libcopybit/copybit_c2d.cpp
@@ -257,7 +257,8 @@
 static int get_format(int format) {
     switch (format) {
         case HAL_PIXEL_FORMAT_RGB_565:        return C2D_COLOR_FORMAT_565_RGB;
-        case HAL_PIXEL_FORMAT_RGB_888:        return C2D_COLOR_FORMAT_888_RGB;
+        case HAL_PIXEL_FORMAT_RGB_888:        return C2D_COLOR_FORMAT_888_RGB |
+                                              C2D_FORMAT_SWAP_RB;
         case HAL_PIXEL_FORMAT_RGBX_8888:      return C2D_COLOR_FORMAT_8888_ARGB |
                                               C2D_FORMAT_SWAP_RB |
                                                   C2D_FORMAT_DISABLE_ALPHA;