wifi: Trigger country code change after set succeed

Fix the side effect after ag/13946488.
Reason:
The country code change listener from wificond rely on
driver supported NL80211_CMD_REG_CHANGE/NL80211_CMD_WIPHY_REG_CHANGE.
Trigger update country code to listener after succeed for
non-supported platform.

Bug: 177630837
Test: atest -c FrameworksWifiTests
Change-Id: Icf7a0a078db6f936a35786ebb41aec8abcb84439
1 file changed