Remove all CAN controller "bus-speed" and "bus-speed-data"
properties. These all use the default bitrates set via Kconfig.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Remove the need for the can_transceiver fixture by assigning the CAN TX
and CAN RX lines to the same GPIO pin to allow for testing without a
transceiver or physical jumper.
Signed-off-by: Eric Holmberg <eric.holmberg@northriversystems.co.nz>
The TWAI peripheral needs a connected CAN transceiver also for testing
in loopback mode.
As there is no board available with this configuration, at least make
sure the CAN API test is built in CI for esp32c3_devkitm.
Signed-off-by: Martin Jäger <martin@libre.solar>