[PATCH] zd1211rw: changed GFP_NOFS to GFP_KERNEL

Michael Buesch commented that GFP_NOFS should not be used in a
network driver.

Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>