mwl8k: add get_survey callback in order to get channel noise

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
This commit is contained in:
John W. Linville 2010-07-28 14:04:24 -04:00
commit 0d462bbb0e