sepolicy: Allow access for /dev/qseecom from vendor_init

avc: denied { getattr } for path="/dev/qseecom" dev="tmpfs" ino=25714
scontext=u:r:vendor_init:s0 tcontext=u:object_r:tee_device:s0
tclass=chr_file permissive=0

Change-Id: Ia55d4e07c4596ab9d2f78cba91b22d84bf35dc5d