[Bugfix][API-1556] wifi driver support hwnat as default

Only Configure :No
Affected branch: MR3.0-Merge-v2.0-GSW
Affected module: WIFI
Is it affected on both ZXIC and MTK:only MTK
Self-test: Yes
Doc Update: No

Change-Id: I9deb715bbff4e37d828590f70590c412f42cb225
6 files changed