[PATCH] libertas: version bump (321p0) and cmds update for new fw (5.220.10.p0)

This patch along with the previous commands update one, is necessary for
mesh and fwt ioctls to work properly with firmware version 5.220.10.p0
and later.

Signed-off-by: Luis Carlos Cobo Rus <luiscarlos@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>