This gets Bluetooth working for the Sparklan card.
btattach doesn't work on the Librem5 at the moment (see [1]) so even
though it's deprecated let's use hciattach to get things working.
1: https://source.puri.sm/Librem5/librem5-base/-/issues/76
Signed-off-by: Alistair Francis <alistair@alistair23.me>
[ci:skip-build] already built successfully in CI
- librem5-base upgraded to v64: some tweaks to shipmode stuff, but
otherwise nothing interesting for us
- actually install the mm-broadmobi-port-types udev rule
- add udev rule + service for enabling bluetooth for Sparklan WiFi
adapters (fixes#2043)