arm64: dts: renesas: rzg2ul-smarc: Enable microSD on SMARC platform

arm64: dts: renesas: rzg2ul-smarc: Enable microSD on SMARC platform

Enable the microSD card slot connected to SDHI1 on the RZ/G2UL SMARC
platform by removing the sdhi1 override which disabled it, and by adding
the necessary pinmux required for SDHI1.

This patch also adds gpios property to vccq_sdhi1 regulator.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220402081328.26292-6-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>