Add IEC60958 audio format

This format refers to the IEC 60958 specification. It can be used when
patching HDMI inputs. IEC 60958 can transport PCM and compressed audio.

Test: m
Change-Id: Idfafb3e2dc73ffb26529d797dce86f8419e5f75d
diff --git a/audio/7.0/config/audio_policy_configuration.xsd b/audio/7.0/config/audio_policy_configuration.xsd
index 4d224c8..8dfa5c4 100644
--- a/audio/7.0/config/audio_policy_configuration.xsd
+++ b/audio/7.0/config/audio_policy_configuration.xsd
@@ -406,6 +406,7 @@
             <xs:enumeration value="AUDIO_FORMAT_MPEGH_BL_L4"/>
             <xs:enumeration value="AUDIO_FORMAT_MPEGH_LC_L3"/>
             <xs:enumeration value="AUDIO_FORMAT_MPEGH_LC_L4"/>
+            <xs:enumeration value="AUDIO_FORMAT_IEC60958"/>
         </xs:restriction>
     </xs:simpleType>
     <xs:simpleType name="extendableAudioFormat">