ARM: dts: at91: sam9x60: add pincontrol for USB Host

The pincontrol node is needed for USB Host since Linux v5.7-rc1. Without
it the driver probes but VBus is not powered because of wrong pincontrol
configuration.

Fixes: 1e5f532c2737 ("ARM: dts: at91: sam9x60: add device tree for soc and board")
Signed-off-by: Cristian Birsan <[e-mail]>
Signed-off-by: Alexandre Belloni <[e-mail]>
Acked-by: Ludovic Desroches <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/at91-sam9x60ek.dts

···
 			atmel,pins = <AT91_PIOB 16 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
 		};
 	};
+
+	usb1 {
+		pinctrl_usb_default: usb_default {
+			atmel,pins = <AT91_PIOD 15 AT91_PERIPH_GPIO AT91_PINCTRL_NONE
+				      AT91_PIOD 16 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
+		};
+	};
 }; /* pinctrl */
 
 &pmc {
···
 	atmel,vbus-gpio = <0
 			   &pioD 15 GPIO_ACTIVE_HIGH
 			   &pioD 16 GPIO_ACTIVE_HIGH>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usb_default>;
 	status = "okay";
 };