Audio: Add AUDIO_FORMAT_DTS_UHD

See ETSI TS 103 491 V1.2.1 (2019-05)
DTS-UHD Audio Format; Delivery of Channels,
Objects and Ambisonic Sound Fields

Test: atest AudioFormatTest
Bug: 184538197
Change-Id: I4123efb29a95a599982af85068f8e4468ff15159
diff --git a/audio/7.0/config/audio_policy_configuration.xsd b/audio/7.0/config/audio_policy_configuration.xsd
index 2030921..a06e027 100644
--- a/audio/7.0/config/audio_policy_configuration.xsd
+++ b/audio/7.0/config/audio_policy_configuration.xsd
@@ -412,6 +412,7 @@
             <xs:enumeration value="AUDIO_FORMAT_MPEGH_LC_L3"/>
             <xs:enumeration value="AUDIO_FORMAT_MPEGH_LC_L4"/>
             <xs:enumeration value="AUDIO_FORMAT_IEC60958"/>
+            <xs:enumeration value="AUDIO_FORMAT_DTS_UHD"/>
         </xs:restriction>
     </xs:simpleType>
     <xs:simpleType name="extendableAudioFormat">