appops: Fix WIFI_SCAN AppOp permission index

WIFI_SCAN and POST_NOTIFICATION permissions are inverted.

Change-Id: I97ebba0e118604294eb474143c53f7e7238dcb59
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "appops: Fix WIFI_SCAN AppOp permission index" into cm-11.0