[PATCH] Another trivial orinoco update

Jeff/Andrew please apply:

This patch alters the convention with which orinoco_lock() is invoked
in the orinoco driver.  This should cause no behavioural change, but
reduces meaningless diffs between the mainline and CVS version of the
driver.  Another small step towards a merge.
Signed-off-by: David Gibson <hermes@gibson.dropbear.id.au>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>