arm64: dts: renesas: hihope-common: Fix eMMC status

SDHI3 got accidentally disabled while adding USB 2.0 support,
this patch fixes it.

Fixes: 734d277f

 ("arm64: dts: renesas: hihope-common: Add USB 2.0 support")
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>