qcacld-2.0 to qcacld-3.0 propagation
If SME posts message to WMI after vdev_detach happens,
there can be a race condition.
In this case VDEV_SET_PARAM will be called after VDEV_DELETE.
Fix this with introduction of new Boolean flag "is_vdev_valid" which
will be true after VDEV_CREATE is done. This flag will be false
when deletion of vdev happens.
WMI will do VDEV_SET_PARAM only if "is_vdev_valid" true.
Change-Id: Idffd0979bd9bdefa1225d2ea6a24180d81000f48
CRs-Fixed: 964146
a89d3b4d80