audio: update speaker volume

Bug:238680468
Test: manual test (b/238680468#comment8)

Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I544375dfba2fee42c0b24242f0817fb3354d69e3

audio/panther/config/audio_policy_volumes.xml

@@ -79,8 +79,13 @@ volume index from 0 to 100.
                                        ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
     <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_HEADSET"
                                         ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
-    <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_SPEAKER"
-                                        ref="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE"/>
+    <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_SPEAKER">
+        <point>1,-6200</point>
+        <point>20,-4700</point>
+        <point>40,-3000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </volume>
     <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_EARPIECE"
                                         ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
     <volume stream="AUDIO_STREAM_MUSIC" deviceCategory="DEVICE_CATEGORY_EXT_MEDIA"