drm_fb_xrgb8888_to_bgr888
drm_fb_xrgb8888_to_bgr888(dst, dst_pitch, src, fb, clip, state);
EXPORT_SYMBOL(drm_fb_xrgb8888_to_bgr888);
void drm_fb_xrgb8888_to_bgr888(struct iosys_map *dst, const unsigned int *dst_pitch,