Replace system/sepolicy/ path to new repository android_system_sepolicy

Change-Id: Ib367b9e44de203c5cfa9aa49b23a34e513ab31c9

omni-aosp.xml

@@ -92,5 +92,6 @@
   <project path="system/media" name="android_system_media" groups="pdk" remote="omnirom" revision="android-7.0" />
   <project path="system/netd" name="android_system_netd" groups="pdk" remote="omnirom" revision="android-7.0" />
   <project path="system/vold" name="android_system_vold" remote="omnirom" revision="android-7.0" />
+  <project path="system/sepolicy" name="android_system_sepolicy" remote="omnirom" revision="android-7.0" />
 
 </manifest>

remove.xml

@@ -120,5 +120,6 @@
   <remove-project name="platform/system/media" />
   <remove-project name="platform/system/netd" />
   <remove-project name="platform/system/vold" />
+  <remove-project name="platform/system/sepolicy" />
 
 </manifest>