This adds a (currently missing) throughput LED trigger for the rt2x00
driver. Previously, LED triggers had to be assigned to the netdev, which
was limited to a single VAP.
Signed-off-by: David Bauer <mail@david-bauer.net>
Tested-by: Christoph Krapp <achterin@googlemail.com>
(cherry picked from commit 985ec835ae)
