MFC 302707-302709
302707
hyperv/vmbus: Nuke unused field from hv_vmbus_channel. Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7036
302708
hyperv/bufring: Remove unused fields Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7037
302709
hyperv/vmbus: Pack bool field into flags field Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7038