Revert "can: ti_hecc: fix -Woverflow compiler warning"

This reverts commit 1da38b70 which is
commit 7cae4d04 upstream.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/63e25fdb-095a-40eb-b341-75781e71ea95@roeck-us.net


Cc: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>