When DFS CAC is going on for SAP, if 5 GHz mac is occupied by the
SAP and it's not available for 5 GHz NAN discovery. Enabling NAN
on 5 GHz in such cases cause inconsistency in firmware state machine
and firmware may assert as DFS MAC is not supposed to be disturbed
while CAC is going on.
So, check if NAN enable request has 5 GHz NAN channel also and reject
the request. Allow NAN enable command if it's 2 GHz only NAN enable
request, while CAC is going on.
Change-Id: If3f2b2b40cc2b70bc7a872970bc088204440d519
CRs-Fixed: 3458462
29d922df4a