qcacld-3.0: Change WNI_VALID_CHANNEL_LIST_LEN to VALID_CHANNEL_LIST_LEN
All WNI configurations will be cleanup based on new cfg framework, so
change Change WNI_VALID_CHANNEL_LIST_LEN to VALID_CHANNEL_LIST_LEN.
Change-Id: I805be88ecdcca90cf3a19d1784bf8f8c261b6ca4
CRs-Fixed: 2379748