RMX1921: sepolicy: Address dolby denial

* avc: denied { getattr } for comm="dms@1.0-service" path="/data/vendor/media" dev="sda14" ino=245770 scontext=u:r:hal_dms_default:s0 tcontext=u:object_r:vendor_media_data_file:s0 tclass=dir permissive=0

Signed-off-by: kaderbava <ksbava7325@gmail.com>