ServeRAID driver: kmem_slab_alloc: bad flags

[YONETANI Tomokazu <qhwt+dragonfly-bugs@xxxxxxxxxx>]

Hello.
I got a panic in ips_add_waiting_command() while checking out the source
tree with cvsup on an X335 with ServeRAID4Lx. This is because ips driver
was not completely adjusted to work with the recent changes to M_* flags
(0 is not a correct kernel malloc flag). If I read the code correctly,
the only caller of ips_add_waiting_command() is ips_get_free_cmd(), and
ips_add_waiting_command() will never be called with flags set to
IPS_NOWAIT_FLAG because of the conditional immediately before the call.
So I removed `flags' from the arguments of ips_add_waiting_command() and
hard-code M_INTWAIT there.
With modified driver, cvsup completed without a problem, and I'm running a
make -j16 buildworld now.

Attached patch should fix two things:
- the panic
- broken RCS keywords

I also found a few style bugs, but I left them untouched for now.

Attachment: ips-mini-fix.diff.gz
Description: application/gunzip