The hw.conf.channel value is not updated properly for drivers that
support HW channel switch.  Since the switch is done entirely by the
driver and we don't call ieee80211_hw_config(), this value remains
untouched.  This patch fixes that by setting the new channel directly in
ieee80211_chswitch_work().
Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>