manifest: add caf telephony global since its a requirement now

Change-Id: Ieb3f987f9e9a7ad12627d885e437200b3d1a673b

omni-caf.xml

@@ -9,5 +9,5 @@
            review="gerrit.omnirom.org" />
 
   <project path="packages/apps/MusicFX" name="android_packages_apps_MusicFX" remote="omnirom" revision="android-7.1" />
-
+  <project path="vendor/codeaurora/telephony" name="android_vendor_codeaurora_telephony" remote="omnirom" revision="android-7.1" />
 </manifest>