AudioFlinger: Add clang tidy checks on build

First pass just enables warnings.

Test: compiles
Bug: 252907478
Merged-In: I3d0622ab908b85adb1913d8482d55e1950fdccc0
Change-Id: I3d0622ab908b85adb1913d8482d55e1950fdccc0
diff --git a/services/audioflinger/FastThread.h b/services/audioflinger/FastThread.h
index 3f6b206..2f0f73f 100644
--- a/services/audioflinger/FastThread.h
+++ b/services/audioflinger/FastThread.h
@@ -92,6 +92,6 @@
 
 };  // class FastThread
 
-}   // android
+}  // namespace android
 
 #endif  // ANDROID_AUDIO_FAST_THREAD_H