clk: renesas: r9a08g045: Add clock and reset support for ETH0 and ETH1

RZ/G3S has 2 Gigabit Ethernet interfaces available.  Add clock and reset
support for both of them.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231207070700.4156557-3-claudiu.beznea.uj@bp.renesas.com


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