Replace PowerHint with Boost in SurfaceComposer callback

The current implementation of this callback is only interested in the
PowerHint::INTERACTION, which maps to the new Boost::INTERACTION.

Bug: 150878220
Test: atest DisplayTransactionTest
Change-Id: I9280def43fd3b1f6cb59673a593709dcbed5b53d
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 8604dc9..aa76613 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -315,6 +315,8 @@
         return mFlinger->onInitializeDisplays();
     }
 
+    auto notifyPowerBoost(int32_t boostId) { return mFlinger->notifyPowerBoost(boostId); }
+
     // Allow reading display state without locking, as if called on the SF main thread.
     auto setPowerModeInternal(const sp<DisplayDevice>& display,
                               int mode) NO_THREAD_SAFETY_ANALYSIS {