Far from complete support for the channel selection systems on f0/l4, but at least brings in the defines needed for doing this yourself. Fixes https://github.com/libopencm3/libopencm3/issues/1001
Far from complete support for the channel selection systems on f0/l4, but at least brings in the defines needed for doing this yourself. Fixes https://github.com/libopencm3/libopencm3/issues/1001