caldata's channel info is never filled with operating channel
info which is causing the operating channel's noise floor
history buffer is reset to default nf during channel change.
Signed-off-by: NRajkumar Manoharan <rmanoharan@atheros.com>
Acked-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>