Add a USB message which controls a GPIO for a specified CAN bus.
The GPIO activates a SSR to connect a 120Ohm terminating resistor
to the specified CAN bus.
Signed-off-by: Daniel Trevitz <daniel.trevitz@wika.com>
Functions in c which are declared as f() accept any argument. Declare
them as f(void) instead to declare that no arguments are allowed and
add uint32_t sysmem_base to dfu_jump_to_bootloader.
