hal: fix unused param warnings

Fix unused param warnings.
Take care of coding style issues.
Remove unwanted code to set acdb_settings.
Fix compilation issues on 8960 platform.

Change-Id: Ifc72472b487abee83ff85e21fd324cee938973e9
diff --git a/hal/voice.c b/hal/voice.c
index 71fee64..ecad7a7 100644
--- a/hal/voice.c
+++ b/hal/voice.c
@@ -478,7 +478,7 @@
         adev->voice.session[i].pcm_tx = NULL;
         adev->voice.session[i].state.current = CALL_INACTIVE;
         adev->voice.session[i].state.new = CALL_INACTIVE;
-        adev->voice.session[i].vsid = 0;
+        adev->voice.session[i].vsid = VOICE_VSID;
     }
 
     voice_extn_init(adev);