qcacld-3.0: Convert SME code legacy channel ID usage

Modify the following 2 APIs' code and parameters to make
sure they're using frequency instead of channel ID:

csr_roam_get_ibss_start_channel_number50
csr_roam_get_ibss_start_channel_number24

Change-Id: I5d3c94f4266fdfc08efe2a0e87ac406a0e7cd5ea
CRs-Fixed: 2554196
1 file changed