mwl8k: Adding support to gather survey per channel
mwl8k: Adding support to gather survey per channel

Survey stats such as channel busy time, rx busy time
and noise are collected when sw_scan starts for every
switched new channel. This happens till sw_scan stops.

All the collected stats are shared up when get_survey()
is called.

This implements support for ACS feature from Hostapd.

Signed-off-by: Yogesh Ashok Powar <72fc4bdfe66b24dbf1c753704fcd1fc87afcdc80@marvell.com>
Signed-off-by: Nishant Sarmukadam <71b9d35293bd317f79504bc5dacd7f99836f2319@marvell.com>
Signed-off-by: John W. Linville <2a53bac7a5d324865ef46ec4c38b2c0fba1456b4@tuxdriver.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs