manifest: fork android_build_soong

Change-Id: I58a91af654f1ae18885c7c9bff72fa8fc529f377

omni-aosp.xml

@@ -17,5 +17,5 @@
     <linkfile src="target" dest="build/target" />
     <linkfile src="tools" dest="build/tools" />
   </project>
-
+  <project path="build/soong" name="android_build_soong" remote="omnirom" revision="android-8.0" />
 </manifest>

remove.xml

@@ -2,6 +2,7 @@
 <manifest>
 
   <remove-project name="platform/build" />
+  <remove-project name="platform/build/soong" />
 
   <remove-project name="platform/developers/build" />
   <remove-project name="platform/developers/demos" />