dt-bindings: clock: renesas,r9a09g077/87: Add XSPI0/1 IDs

dt-bindings: clock: renesas,r9a09g077/87: Add XSPI0/1 IDs

Add clock definitions for XSPI0/1 to both R9A09G077 and R9A09G087 SoCs.
These definitions are required for describing XSPI devices in DT

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251028165127.991351-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>