In case of 1x MLO roaming, 4 way handshake is offloaded to supplicant
and link vdev is down in FW. Host has to bring up link vdev post
set key installation.
Add handling in host for following:
- During roam sync indication handle only assoc link.
- Save reassoc response and link information.
- After keys are installed bring up link vdev by
queueing connect req on link vdev.
- Enable roaming after all links are up.
Change-Id: I9c0722f88e950ba05ec3dd7f44883bedf568f97d
CRs-Fixed: 3287316
87f1a94226