P2P2: Enable support for setting PMKSA in P2P Client mode

P2P2: Enable support for setting PMKSA in P2P Client mode

When a device does not support separate group interface creation for the
group role, the existing P2P interface mode is switched from device mode
to client mode before invoking wpa_driver_nl80211_connect().
Additionally, drivers only permit configuring PMKSA in P2P client mode.
Therefore, PMKSA should be set in wpas_start_assoc_cb() for drivers that
offload SME from wpa_supplicant.

Signed-off-by: Vinay Gannevaram <quic_vganneva@quicinc.com>