mac80211/rt2x00: fix lna assignment typo in Rt3352 which went upstream

Reviewing what went into wireless-testing I found a quite nasty mistake,
probably a result of copy&past'ing from the lines below in rt2800lib.c.
This adds another patch to fix that.

Signed-off-by: Daniel Golle <dgolle@allnet.de>

SVN-Revision: 33616