gfs2: Allow immediate GLF_VERIFY_DELETE work

[ Upstream commit 160bc955 ]

Add an argument to gfs2_queue_verify_delete() that allows it to queue
GLF_VERIFY_DELETE work for immediate execution.  This is used in the
next patch.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Stable-dep-of: 7c6f714d ("gfs2: Fix unlinked inode cleanup")
Signed-off-by: Sasha Levin <sashal@kernel.org>