audio policy: minor log and dump fixes

Fix DeviceDescriptorBase dump formatting and add more
info to getOffoadSupport() verbose log.

Test: adb shell dumpsys media.audio_policy
Change-Id: Ibbc4f80305d5b326c316f7510a03688ebeadb33a
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 51abef1..65bae77 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -3547,7 +3547,9 @@
                                             offloadInfo.channel_mask,
                                             AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD,
                                             true /* directOnly */);
-    ALOGV("%s: profile %sfound", __func__, profile != 0 ? "" : "NOT ");
+    ALOGV("%s: profile %sfound%s", __func__, profile != nullptr ? "" : "NOT ",
+            (profile != nullptr && (profile->getFlags() & AUDIO_OUTPUT_FLAG_GAPLESS_OFFLOAD) != 0)
+            ? ", supports gapless" : "");
     if (profile == nullptr) {
         return AUDIO_OFFLOAD_NOT_SUPPORTED;
     }