qtnfmac: cleanup slave_radar access function

Currently this parameter is global, it is not specific to mac.
So this function does not need any input parameters.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
3 files changed