qcacmn: Avoid setting SOURCE_DRIVER for non-BDF CC event

Firmware could send same channel list for each pdev. Since SOURCE DRIVER
is default, it would be set for the second event. Avoid that. Remember the
source of the first event itself.

Change-Id: Ib9db58da1fa27673b04a4c62e10f2a05702348ad
CRs-Fixed: 2352151
1 file changed