renesas: rzg: Add support to identify HopeRun HiHope RZ/G2N board

Add support to identify HopeRun HiHope RZ/G2N board.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Change-Id: Ib47aba84b63488247f6e9da1f5878140129766ce
5 files changed