dhd: fix wifi driver caused selinux denied issue [1/1]

PD#SWPL-15494

Problem:
type=1400 audit(1571727793.256:4): avc: denied { search } for comm=
"init" name="wifi" dev="mmcblk0p17" ino=153543 scontext=u:r:vendor_
init:s0 tcontext=u:object_r:wifi_data_file:s0 tclass=dir permissive=0

when insmod dhd driver, trigger avc denied

Solution:
from android O, wifi related path changed from /data/misc/wifi
to /data/vendor/misc/wifi

Verify:
Locally

Change-Id: I69255412f9b666fd66981e7adc358132abcb43f6
Signed-off-by: Shuide Chen <shuide.chen@amlogic.com>