Add wake lock tag for bit-perfect thread.

Bug: 364303464
Test: build
Flag: EXEMPT bugfix
Change-Id: I29d627ae8c6b45d80cb07e9112c2b4c96df86d05
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 76e4712..f9c820f 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1196,6 +1196,8 @@
         return String16("MmapCapture");
     case SPATIALIZER:
         return String16("AudioSpatial");
+    case BIT_PERFECT:
+        return String16("AudioBitPerfect");
     default:
         ALOG_ASSERT(false);
         return String16("AudioUnknown");