audioflinger: add latency modes to dumpsys

Add information about variable latency mode controls
in audio flinger and mixer thread dumpsys

Bug: 281913713
Test: make
Change-Id: I0936e22e9efec7f2a862b10be976c34fc57c63ee
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 5fcc302..325adfa 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -842,6 +842,8 @@
     for (const auto& vibratorInfo : mAudioVibratorInfos) {
         dprintf(fd, "  - %s\n", vibratorInfo.toString().c_str());
     }
+    dprintf(fd, "Bluetooth latency modes are %senabled\n",
+            mBluetoothLatencyModesEnabled ? "" : "not ");
 }
 
 void AudioFlinger::dumpPermissionDenial(int fd, const Vector<String16>& args __unused)