wpa_supplicant(hidl): Support WPS PBC for GO

Current HIDL implementation doesn't handle ap_iface(GO).
If device is GO, wpa_supplicant_ap_wps_pbc should be called.
This patch takes care of PBC use case only.

Bug: 38251521
Test: Manually verified via settings UI
Change-Id: I18d04eece606772a1544fbf7238973113b4132a5
1 file changed