ARM: dts: renesas: r9a06g032-rzn1d400-db: Add pinmux for the CPLD

The CPLD has no dedicated driver, so apply the pinmux settings with the
pinmux driver instead.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250508074311.20343-5-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: Wolfram Sang

arch/arm/boot/dts/renesas/r9a06g032-rzn1d400-db.dts

@@ -170,6 +170,9 @@
 };
 
 &pinctrl {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pins_cpld>;
+
 	pins_can0: pins_can0 {
 		pinmux = <RZN1_PINMUX(162, RZN1_FUNC_CAN)>,	/* CAN0_TXD */
 			 <RZN1_PINMUX(163, RZN1_FUNC_CAN)>;	/* CAN0_RXD */
@@ -182,6 +185,13 @@
 		drive-strength = <6>;
 	};
 
+	pins_cpld: pins-cpld {
+		pinmux = <RZN1_PINMUX(119, RZN1_FUNC_USB)>,
+			 <RZN1_PINMUX(120, RZN1_FUNC_USB)>,
+			 <RZN1_PINMUX(121, RZN1_FUNC_USB)>,
+			 <RZN1_PINMUX(122, RZN1_FUNC_USB)>;
+	};
+
 	pins_eth3: pins_eth3 {
 		pinmux = <RZN1_PINMUX(36, RZN1_FUNC_CLK_ETH_MII_RGMII_RMII)>,
 			 <RZN1_PINMUX(37, RZN1_FUNC_CLK_ETH_MII_RGMII_RMII)>,