ath9k: Fix bug in rate control capability registration

Dual stream capability must be registered only when the
hardware supports it.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2009-01-23 11:20:51 +05:30 • committed by John W. Linville
commit f8206e0534