branches: 1.2.4;
PR 58681: add a port of the OpenBSD viogpu(4) driver written by
Joshua Stein <jcs@openbsd.org>.
Port by George Matsumura with help from Jiaxun Yang.

virtio(4): Consolidate kernel configs.

No functional change intended.

Leave `# XXX ?' comments where I don't know why the driver in
question is excluded. (Typical reason is that PAGE_SIZE is not 4096
but I didn't investigate -- if you do investigate, please either
update the comment if you determine a reason, or enable the driver if
you don't.)

PR kern/59211: vio9p(4): missing from various GENERICs and MAKEDEVs