manifest: add omni system/bt

Change-Id: Idb135453d847e3867679cd60d0fc7ed8083dc554

omni-aosp.xml

@@ -54,6 +54,7 @@
 
   <project path="packages/inputmethods/LatinIME" name="android_packages_inputmethods_LatinIME" remote="omnirom" revision="android-8.0" />
 
+  <project path="system/bt" name="android_system_bt" remote="omnirom" revision="android-8.0" />
   <project path="system/core" name="android_system_core" remote="omnirom" revision="android-8.0" />
   <project path="system/media" name="android_system_media" remote="omnirom" revision="android-8.0" />
   <project path="system/netd" name="android_system_netd" remote="omnirom" revision="android-8.0" />

remove.xml

@@ -106,6 +106,7 @@
 
   <remove-project name="platform/packages/inputmethods/LatinIME" />
 
+  <remove-project name="platform/system/bt" />
   <remove-project name="platform/system/core" />
   <remove-project name="platform/system/media" />
   <remove-project name="platform/system/netd" />