appops: Fix WIFI_SCAN AppOp permission index

WIFI_SCAN and POST_NOTIFICATION permissions are inverted.

Change-Id: Ib007dcefd0f3cdd4b55136aa9bbbdb36038ba3d2
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "appops: Fix WIFI_SCAN AppOp permission index" into pac-4.4