Added screen information to emulator audio

Added display info to emulator audio_polic_configuration.xml.
This enables multizone audio support for display in emulator.

Bug: 134104943
Test: Tested using emulator and kitchensink app.
Change-Id: I89f219ab4ec9be0892f86078c6d6d7815c4e144f
diff --git a/emulator/audio/car_audio_configuration.xml b/emulator/audio/car_audio_configuration.xml
index 628d14a..7d3cf01 100644
--- a/emulator/audio/car_audio_configuration.xml
+++ b/emulator/audio/car_audio_configuration.xml
@@ -59,6 +59,9 @@
                     </device>
                 </group>
             </volumeGroups>
+            <displays>
+                <display port="0"/>
+            </displays>
             <!-- to specify displays associated with this audio zone, use the following tags
                 <displays>
                     <display port="1"/>
@@ -82,6 +85,9 @@
                     </device>
                 </group>
             </volumeGroups>
+            <displays>
+                <display port="1"/>
+            </displays>
         </zone>
     </zones>
 </carAudioConfiguration>