Add support for EGL_KHR_gl_colorspace

Change-Id: I684d0b8556cd6c84ee4b4d67e1bb95c3b96fccfb
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 2defe34..ddbe6f2 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -582,6 +582,7 @@
     switch (format) {
         case HAL_PIXEL_FORMAT_RGBA_8888:
         case HAL_PIXEL_FORMAT_BGRA_8888:
+        case HAL_PIXEL_FORMAT_sRGB_A_8888:
             return false;
     }
     // in all other case, we have no blending (also for unknown formats)