recovery: Add new rule for sys.usb.ffs.ready

  init: avc:  denied  { set } for property=sys.usb.ffs.ready
    scontext=u:r:recovery:s0 tcontext=u:object_r:ffs_prop:s0
    tclass=property_service

Change-Id: Id3441ccc3c6a8915a5fdf50efd8c617d1242868a
diff --git a/sepolicy/recovery.te b/sepolicy/recovery.te
index 76e7a62..da6ddac 100644
--- a/sepolicy/recovery.te
+++ b/sepolicy/recovery.te
@@ -29,6 +29,9 @@
 # Control properties
 allow recovery recovery_prop:property_service set;
 
+# Set property sys.usb.ffs.ready
+allow recovery ffs_prop:property_service set;
+
 # recursive rm for wipes... :(
 allow app_data_file self:filesystem associate;
 allow recovery app_data_file:file { read open create write };