Set config_servicesExtensionPackage for Android TV

Test: m installclean; m; # flash and check device boots.
Bug: 147663325
Change-Id: I4808473c2fc6a63cbecb3122832bcfa6db20415f
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index acdf91d..ab9181a 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -83,4 +83,6 @@
         <item>7</item>
     </integer-array>
 
+    <!-- Package name of the required service extension package. -->
+    <string name="config_servicesExtensionPackage" translatable="false">android.ext.services</string>
 </resources>