Add support for unreliable connected (UC) transport to mthca driver:
 - Add attributes for UC to modify QP table.
 - Add support for posting UC work requests.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>