qcacld-3.0: Verify the channel and BW info in monitor mode

Currently the monitor mode does not check the chan
validity and BW validity before starting the monitor
mode vdev which could result in invalid configuration
given to FW and thus further can lead to assert.
Eg. If the command comes for an invalid channel, or
suppose 160 MHZ and the device supports 80 MHZ only
then it can lead to assert.

Fix is to verify the channel and BW info and reject
the command if found invalid.

Change-Id: Iaf9f06f8d4b943bd1e8db5c22ea155a4fe3e61a8
CRs-Fixed: 2572152