arm64: dts: renesas: r8a774e1-hihope-rzg2h: Enable HS400 mode

This patch enables HS400 mode on HiHope RZ/G2H board.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20200819080841.3475-1-biju.das.jz@bp.renesas.com


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