qcacld-3.0: Add sanity to optimize log prints
In reg_is_6ghz_psc_chan_freq, logging all channels except
6 GHz band channels.
Added 6 GHz band check in wma_update_channel_list to avoid
redundant log prints in reg_is_6ghz_psc_chan_freq
Change-Id: I1a4a43707e8dc44d0c6f4f6d6ac9f86324a4d2fd
CRs-Fixed: 3277118