Wire-up colorMode="hdr"

Fow now it uses a fixed white point of 150nits
TBD if this is disabled or adjusted

Test: Demo app
Change-Id: Iac13597b3d7633fdef3feaf7ec1da0c27c87904c
diff --git a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
index 24a6228..389fe7e 100644
--- a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
@@ -87,6 +87,8 @@
         // Note: The default preference of pixel format is RGBA_8888, when other
         // pixel format is available, we should branch out and do more check.
         fboInfo.fFormat = GL_RGBA8;
+    } else if (colorType == kRGBA_1010102_SkColorType) {
+        fboInfo.fFormat = GL_RGB10_A2;
     } else {
         LOG_ALWAYS_FATAL("Unsupported color type.");
     }