can: kvaser_usb: leaf: Add struct for Tx ACK commands

Add, struct leaf_cmd_tx_acknowledge, for Tx ACK commands received from leaf
devices (M32C and leafimx28).

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20240701154936.92633-6-extja@kvaser.com


Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>