The "wmi_pdev_dfs_radar_detection_event" has an unused field "chan_freq".
It currently holds the value of primary 20MHz channel. With the
introduction of 11BE chipsets, this field is changed to hold the value of
the center frequency of the channel width on which the radar is found.
This new change is indicated by a wmi service
"wmi_is_radar_found_chan_freq_eq_center_freq".
For the Chipsets that support this service, the radar found frequency
can be calculated by mere addition of the fields "chan_freq" and
"freq_offset" field.
Change-Id: I8d2ce0023e2feb6e749ca8d7d5f547fafc0fdf98
350da55314