sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

etherswitch(4): Fix a few common typos in source code comments

- s/accomodate/accommodate/

MFC after: 3 days

etherswitch: Fix RT305x vlan group operation

Fix an issue which prevents proper operation (addition/removal of members)
of RT305x vlan groups.

Tested by: yamori813@yahoo.co.jp

Submitted by: yamori813@yahoo.co.jp (initial version)
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D9607

Introduce basic etherswitch support for Ralink SoCs

This revision introduces basic support for the internal ESW switch found
Ralink/Mediatek SoCs such as RT3050, RT3352, RT5350, MT7628; and GSW
found in MT7620 and MT7621.

It only supports 802.1q VLANs and doesn't support external PHYs at the
moment (only the ones that are built into the switch itself).

Approved by: adrian (mentor)
Sponsored by: Smartcom - Bulgaria AD
Differential Revision: https://reviews.freebsd.org/D6348