clk: renesas: r8a779a0: Add CANFD module clock

Adds "canfd0" to mod clocks.

Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Link: https://lore.kernel.org/r/20220111162231.10390-2-uli+renesas@fpond.eu


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>