arm64: dts: renesas: r8a774a1: Add FCPF and FCPV instances

Add FCPF and FCPV instances to the r8a774a1 dtsi, similarly
to what was done for the r8a7796 with commit 41dbbf0c
("arm64: dts: r8a7796: Add FCPF and FCPV instances"),
commit 69490bc9 ("arm64: dts: renesas: r8a7796: Point
FDP1 via FCPF to IPMMU-VI0"), and commit cef942d0

 ("arm64:
dts: renesas: r8a7796: Point VSPI via FCPVI to IPMMU-VC0").

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>