Fix AVC denied for vendor_display_prop

selinux: avc:  denied  { set } for  scontext=u:r:vendor_init:s0 tcontext=u:object_r:vendor_display_prop:s0 tclass=property_service permissive=0\x0a
init: Do not have permissions to set 'vendor.gralloc.disable_ubwc' to '0' in property file '/vendor/build.prop': SELinux permission check failed

Bug: 145485815
Test: flash selinux modules to device and find avc errors gone
Change-Id: I95a40e1b4156b72f3b03a3e68e44ed30499171c3