[ACTIVITY] report week ending 14 Jan

Progress: * UM-2 [QEMU upstream maintainership] - Most of this week was spent on continuing to work through my code-review queue :-/ - Sent a few minor cleanup patches for linux-user nits I noticed while reading the code as part of reviewing a big bsd-user patchset

* QEMU-420 [GICv4 emulation] - got some reviewed ITS cleanup patches upstream - rerolled and sent v2 patchset for the rest of the cleanup patches - got back up to speed with where I left my GICv4 ITS patches before Christmas, and dealt with some minor loose ends I'd left in the last patch or two I was working on.

-- PMM