[BugFix][API-1039]add api to get sta dns info after sta conencted ap

Only Configure

Affected branch:MR3.0-xx && GSW3.0

Affected module:wifi

Is it addected on both ZXIC and MTK: only MTK

Self-test: Yes

Doc Update: YES

Change-Id: I828227ccd154ac017a9ce4a8a1eb9a264488631d
2 files changed