qcacmn: Inform fw if NAN is disabled on an SRD channel

Firmware expects the channel property WMI_CHAN_FLAG_NAN_DISABLED
to be set if NAN is not allowed on any channel. Firmware shall
check the flag and decides whether to enable NAN/NDP on that
channel.

Change-Id: I8e283d2cd0f83a43e04dad142b09d519ef7f0db3
CRs-Fixed: 2760348