Add HotwordEnrollment

* Can't be installed from play store

Signed-off-by: Paul Keith <javelinanddart@bestas.gr>

proprietary-files-common.txt

@@ -8,6 +8,7 @@
 -priv-app/GoogleOneTimeInitializer/GoogleOneTimeInitializer.apk:PRESIGNED
 -priv-app/GooglePartnerSetup/GooglePartnerSetup.apk:PRESIGNED
 -priv-app/GoogleServicesFramework/GoogleServicesFramework.apk:PRESIGNED
+-priv-app/HotwordEnrollment/HotwordEnrollment.apk:PRESIGNED
 -priv-app/Phonesky/Phonesky.apk:PRESIGNED
 -priv-app/SetupWizard/SetupWizard.apk:PRESIGNED