qcacld-3.0: Replace channel ID with channel frequency

Replace channel ID(currentReqChannel) with channel frequency(
curr_req_chan_freq) in struct pe_session.

Remove a few camel cases captured by checkpatch.

Change-Id: I56b5d411632ae3b7069fcfac843626435c5b27a2
CRs-Fixed: 2488084
2 files changed