arm64: dts: renesas: rcar-gen3: Increase CANFD clock rates

arm64: dts: renesas: rcar-gen3: Increase CANFD clock rates

Currently, all R-Car Gen3 .dtsi files configure the CANFD core clocks to
40 MHz, which limits CAN-FD data transfer rates to 4 Mbps.  However, all
R-Car Gen3 SoCs except for R-Car D3 support CANFD clock rates up to 80
MHz.

Now the R-Car CAN-FD driver has gained support for Transceiver Delay
Compensation, increase all appropriate CANFD clock rates to the
documented maximum, to support data rates up to 8 Mbps.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/d1ca3cd184193084b6de4332d47d0aee1923f6a6.1755090456.git.geert+renesas@glider.be