During set channel request for monitor mode vdev start is triggered.
The vdev operation is completed only when vdev up is send to FW.
Wlan driver does not wait for completion of the vdev up operation
and after posting set channel request context is returned to supplicant.
Supplicant sends vdev stop operation for montior mode which results in
vdev up command sending to FW after vdev stop.
Fix, is to wait for completion of vdev up operation, then return the
context to supplicant.
change-ID: I33d7f9f85848b74d1206cff145e27ca2d96580a0
CRs-Fixed: 2627239
7bb841afbd