audio flinger: rename Bluetooth latency mode APIs

Rename APIs controlling Bluetooth variable latency
after API review suggestions.

Bug: 257922898
Test: make

Merged-In: I517ad9c6aef14975c9e0a1a2703d1b17d638ea0e
Change-Id: I517ad9c6aef14975c9e0a1a2703d1b17d638ea0e
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index cab114b..9d51b5e 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -7435,9 +7435,9 @@
     return NO_ERROR;
 }
 
-status_t AudioFlinger::PlaybackThread::setBluetoothLatencyModesEnabled(bool enabled) {
+status_t AudioFlinger::PlaybackThread::setBluetoothVariableLatencyEnabled(bool enabled) {
     if (mOutput == nullptr || mOutput->audioHwDev == nullptr
-            || !mOutput->audioHwDev->supportsBluetoothLatencyModes()) {
+            || !mOutput->audioHwDev->supportsBluetoothVariableLatency()) {
         return INVALID_OPERATION;
     }
     mBluetoothLatencyModesEnabled.store(enabled);