manifest: add back missing OmniChange

Change-Id: Id64cdd0f778bdb86b1c35f498df12241733075b3

omni-private.xml

@@ -12,4 +12,5 @@
   <project path="packages/apps/OmniStyle" name="android_packages_apps_OmniStyle" remote="omnirom2" revision="android-10" />
   <project path="packages/apps/OmniLib" name="android_packages_apps_OmniLib" remote="omnirom2" revision="android-10" />
   <project path="packages/apps/OmniRemote" name="android_packages_apps_OmniRemote" remote="omnirom2" revision="android-10" />
+  <project path="packages/apps/OmniChange" name="android_packages_apps_OmniChange" remote="omnirom2" revision="android-10" />
 </manifest>