SF: fix binder thread priority

Add setMinSchedulerPolicy to all binder interfaces SF exposes.
It was missing from gui::ISurfaceComposer and
gui::IDisplayEventConnection.

Test: presubmit
Bug: 299378819
Change-Id: Ia0d99efa5a3bc58625c320d4df3c08bb597d2e38
diff --git a/services/surfaceflinger/Scheduler/EventThread.h b/services/surfaceflinger/Scheduler/EventThread.h
index a7c8b74..7842318 100644
--- a/services/surfaceflinger/Scheduler/EventThread.h
+++ b/services/surfaceflinger/Scheduler/EventThread.h
@@ -78,6 +78,7 @@
     binder::Status setVsyncRate(int rate) override;
     binder::Status requestNextVsync() override; // asynchronous
     binder::Status getLatestVsyncEventData(ParcelableVsyncEventData* outVsyncEventData) override;
+    binder::Status getSchedulingPolicy(gui::SchedulingPolicy* outPolicy) override;
 
     VSyncRequest vsyncRequest = VSyncRequest::None;
     const uid_t mOwnerUid;