arm64: dts: renesas: Add initial device tree for RZ/V2L SMARC EVK

arm64: dts: renesas: Add initial device tree for RZ/V2L SMARC EVK

Add basic support for the RZ/V2L SMARC EVK (based on R9A07G054L2):
- memory
- External input clock
- CPG
- Pin controller
- SCIF
- GbEthernet
- Audio Clock

It shares the same carrier board with RZ/G2L with the same pin mapping.
Delete the gpio-hog nodes from pinctrl as they will be added later when
the functionality has been tested.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220110134659.30424-12-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>