MAINTAINERS: add Vincent MAILHOL as maintainer for the ETAS ES58X CAN/USB driver

Adding myself (Vincent Mailhol) as a maintainer for the ETAS ES58X
CAN/USB driver.

Link: https://lore.kernel.org/r/20210814093353.74391-1-mailhol.vincent@wanadoo.fr


Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>