Audio Aidl: Unify naming for conversion methods

Most of the naming for aidl2legacy and legacy2aidl
are consistent, correct the few remaining inconsistencies.

Test: compiles, boots
Bug: 175316373
Change-Id: I85952846b306a2b5e88db125ccfbe431cc9bd7cd
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index 8c53c5b..1b1e143 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -2819,7 +2819,7 @@
         media::AudioTimestampInternal ts;
         mAudioTrack->getTimestamp(&ts, &status);
         if (status == OK) {
-            timestamp = VALUE_OR_FATAL(aidl2legacy_AudioTimestamp(ts));
+            timestamp = VALUE_OR_FATAL(aidl2legacy_AudioTimestampInternal_AudioTimestamp(ts));
         }
     } else {
         // read timestamp from shared memory