Add support to fallback the PMKID generation from firmware to
wpa_supplicant.
In FIPS Enabled case, for roaming Firmware sends PMKID
request to host as firmware is not supposed to do crypto
functionality with FIPS enabled. Once the roam candidate
selection is done in the firmware, it sends the
WMI_ROAM_PMKID_REQUEST_EVENTID. After receiving this event
the host driver triggers an event to wpa_supplicant using
NL80211_CMD_PMKSA_CANDIDATE for PMKID generation. Then
wpa_supplicant responds with PMKID to host using
NL80211_CMD_SET_PMKSA. And host updates the wmi pmk cache
and indicates the firmware via WMI_PDEV_UPDATE_PMK_CACHE_CMDID
wmi command.
Change-Id: I7d33a2b92f97260fa5a7e742b6f877adc7eced55
CRs-Fixed: 2512955
6a87278fe7