wpa: Import wpa_supplicant/hostapd commits up to b4f7506ff

Merge vendor commits 40c7ff83e74eabba5a7e2caefeea12372b2d3f9a,
efec8223892b3e677acb46eae84ec3534989971f, and
2f6c3ea9600b494d24cac5a38c1cea0ac192245e.

Tested by: philip

(cherry picked from commit c1d255d3ffdbe447de3ab875bf4e7d7accc5bfc5)