gralloc: Fix RGB888 marked as VIDEO

RGB888 layers were marked as VIDEO and treated as YUV along the path.
If RGB888 is ever required to be a video format we need to make sure
to have other differentiation mechanisms between a UI RGB888 and a
Video RGB888 if any special handling is necessary.

Change-Id: I94c74ac10d589e20dd600db0d1e32645613b1b21

libgralloc/gpu.cpp

@@ -175,9 +175,6 @@ void gpu_context_t::getGrallocInformationFromFormat(int inputFormat,
 {
     *bufferType = BUFFER_TYPE_VIDEO;
 
-    if (inputFormat == HAL_PIXEL_FORMAT_RGB_888)
-        return;
-
     if (inputFormat <= HAL_PIXEL_FORMAT_sRGB_X_8888) {
         // RGB formats
         *bufferType = BUFFER_TYPE_UI;