sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

iwm: Define the mqrx_supported capability.

The firmware for 9000-series and newer devices has a different receive
API which supports multiple queues.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

iwm: Add device configuration definitions for 9000-series chips.

Match such chips using the device ID. We should really be checking the
subdevice as well, since a smaller number of 9460 and 9560 devices
actually belong to a new series of devices and require different
firmware, but that will require some extra logic in iwm_attach().

Submitted by: lwhsu, Guo Wen Jun <blockk2000@gmail.com>
MFC after: 2 weeks