qcacld-3.0: Replace channel ID with frequency (bss_description 1)

Prepare to replace channel id with channel frequency of struct
bss_description, first cleanup reference of channel id of struct
bss_description in csr_api_roam.c, use channel frequency instead.

Change-Id: If584dcbd5a6c1718af1902799e1f679898ef3585
CRs-Fixed: 2491396
1 file changed