angler: audio: Fix gain for speaker in combo device usecase

- in combo (speaker + headset) usecase alarm max volume on speaker
  is much lower than only in speaker usecase
- when headset is connected stream volume is reduced from framework
  this imapcts speaker volume.
- fix is to bump the speaker gain when combo (speaker + headset)
  device detected

Bug 26769982

Change-Id: I0375c5947c9a96b794f91fce82788b7b75d1eec1
diff --git a/mixer_paths.xml b/mixer_paths.xml
index 672c178..b1df565 100755
--- a/mixer_paths.xml
+++ b/mixer_paths.xml
@@ -1553,8 +1553,8 @@
     </path>
 
     <path name="spkr-gain-in-headphone-combo">
-        <ctl name="Left Speaker Gain" value="20" />
-        <ctl name="Right Speaker Gain" value="20" />
+        <ctl name="Left Speaker Gain" value="30" />
+        <ctl name="Right Speaker Gain" value="30" />
     </path>
 
     <path name="speaker-gain-default">