can: tcan4x5x: replace DEVICE_NAME by KBUILD_MODNAME

This patch replaces the DEVICE_NAME macro by KBUILD_MODNAME and removed the
superfluous DEVICE_NAME.

Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-2-mkl@pengutronix.de


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