hp34970-firmware: shortlog

shortlog

Mon, 04 Oct 2021 21:15:35 +0200	David Douard	Clean several compilation warnings draft	changeset \| files
Mon, 04 Oct 2021 21:14:39 +0200	David Douard	Fix SHIFT and code cleanup draft	changeset \| files
Sun, 03 Oct 2021 22:58:49 +0200	David Douard	Make USBSerial work -- at last draft	changeset \| files