dt-bindings: phy: Add binding for TI TCAN104x CAN transceivers

Add binding documentation for TI TCAN104x CAN transceivers.

Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20210510051006.11393-3-a-govindraju@ti.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>