arm64: dts: renesas: rzg2l: Add clock-names and reset-names to DMAC nodes

Add clock-names and reset-names to RZ/G2{L,LC,UL}, RZ/V2L and
RZ/Five DMAC nodes.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230315064726.22739-2-biju.das.jz@bp.renesas.com


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