arm64: mvebu: armada37xx: add pinctrl definition

Start to populate the device tree of the Armada 37xx with the pincontrol
configuration used on the board providing a dts.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Konstantin Porotchkin <kostap@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
diff --git a/arch/arm/dts/armada-3720-db.dts b/arch/arm/dts/armada-3720-db.dts
index 85761af..5f06252 100644
--- a/arch/arm/dts/armada-3720-db.dts
+++ b/arch/arm/dts/armada-3720-db.dts
@@ -81,11 +81,15 @@
 };
 
 &eth0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>;
 	status = "okay";
 	phy-mode = "rgmii";
 };
 
 &i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
 	status = "okay";
 };
 
@@ -117,6 +121,8 @@
 
 &spi0 {
 	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_quad_pins>;
 
 	spi-flash@0 {
 		#address-cells = <1>;
@@ -130,6 +136,8 @@
 
 /* Exported on the micro USB connector CON32 through an FTDI */
 &uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins>;
 	status = "okay";
 };