MAINTAINERS: Add entries for the RZ/V2H(P) RSPI

Add the MAINTAINERS entries for the Renesas RZ/V2H(P) RSPI
driver.

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20250729145110.37258-1-fabrizio.castro.jz@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Fabrizio Castro

MAINTAINERS

@@ -21208,6 +21208,14 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/net/renesas,rzv2h-gbeth.yaml
 F:	drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c
 
+RENESAS RZ/V2H(P) RSPI DRIVER
+M:	Fabrizio Castro <fabrizio.castro.jz@renesas.com>
+L:	linux-spi@vger.kernel.org
+L:	linux-renesas-soc@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml
+F:	drivers/spi/spi-rzv2h-rspi.c
+
 RENESAS RZ/V2H(P) USB2PHY PORT RESET DRIVER
 M:	Fabrizio Castro <fabrizio.castro.jz@renesas.com>
 M:	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>