zephyr: drivers: can: Rename bus_speed to bitrate

This change was introduced in
zephyrproject-rtos/zephyr@68096cedaec816f7bfa46.

Here is the original commit message:

    drivers: can: rename struct can_driver_config fields

    Rename the "bus_speed" and "bus_speed_data" fields of struct
    can_driver_config to "bitrate" and "bitrate_data" to match the
    corresponding devicetree properties and the terminology used in the rest of
    the CAN subsystem API.

Signed-off-by: Yasushi SHOJI <yashi@spacecubics.com>

zephyr/drivers/can/can_sccan.c

@@ -1050,7 +1050,7 @@ static int sc_can_init(const struct device *dev)
 	uint32_t v;
 
 	/* Set timing according to dts default setting */
-	ret = can_calc_timing(dev, &timing, config->common.bus_speed, config->common.sample_point);
+	ret = can_calc_timing(dev, &timing, config->common.bitrate, config->common.sample_point);
 	if (ret == -EINVAL) {
 		LOG_ERR("Can't find timing for given param");
 		return -EIO;