wl12xx: move rssi_thold and last_rssi_event into wlvif

move rssi_thold and last_rssi_event into the per-interface
data, rather than being global.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
5 files changed