qcacmn: fix monitor packets radiotap channel incorrect issue

The channel number is always 0 from HAL RX PPDU TLV, then monitor
mode frames radiotap channel frequency is always 2407, get the
correct channel number that we saved when set monitor channel.

Change-Id: Ib927fe9aca3a4c1f98845fe37c9b1d37d1d6cf5a
CRs-Fixed: 2471161
5 files changed