Update setHdrConversionStrategy to return the preferredHdrOutput type

Bug: 268336382
Test: atest libsurfaceflinger_unittest
Test: atest libgui_test
Change-Id: I35108601a1b675f62fc02894ffee4f4e46bb892f
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index 82b677e..9b9b7fd 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -293,7 +293,7 @@
     virtual Error getHdrConversionCapabilities(
             std::vector<::aidl::android::hardware::graphics::common::HdrConversionCapability>*) = 0;
     virtual Error setHdrConversionStrategy(
-            ::aidl::android::hardware::graphics::common::HdrConversionStrategy) = 0;
+            ::aidl::android::hardware::graphics::common::HdrConversionStrategy, Hdr*) = 0;
 };
 
 } // namespace Hwc2