Make gainmap parcelable.

Bug: 267215989
Test: android.graphics.cts.GainmapTest

Change-Id: I189f652f26f2f92e37afdc3f69ae7b7653d69bf0
diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index 9e3f115..b221654 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -364,6 +364,7 @@
         "jni/PathMeasure.cpp",
         "jni/Picture.cpp",
         "jni/Region.cpp",
+        "jni/ScopedParcel.cpp",
         "jni/Shader.cpp",
         "jni/RenderEffect.cpp",
         "jni/Typeface.cpp",