audio: Add missing deep buffer to use_case_table

Change-Id: I5216838e0de257241206546f2e9f71896292fe9e
diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 61b28e2..86fd9ba 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -225,6 +225,7 @@
     [USECASE_AUDIO_PLAYBACK] = "playback",
     [USECASE_AUDIO_PLAYBACK_MULTI_CH] = "playback multi-channel",
     [USECASE_AUDIO_PLAYBACK_OFFLOAD] = "compress-offload-playback",
+    [USECASE_AUDIO_PLAYBACK_DEEP_BUFFER] = "playback deep-buffer",
     [USECASE_AUDIO_CAPTURE] = "capture",
     [USECASE_AUDIO_CAPTURE_HOTWORD] = "capture-hotword",
     [USECASE_VOICE_CALL] = "voice-call",