ARM: dts: da850: Add node for pullup/pulldown pinconf

This SoC has a separate pin controller for configuring pullup/pulldown
bias on groups of pins.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/boot/dts/da850.dtsi

@@ -434,6 +434,11 @@ gpio: gpio@226000 {
 			ti,davinci-gpio-unbanked = <0>;
 			status = "disabled";
 		};
+		pinconf: pin-controller@22c00c {
+			compatible = "ti,da850-pupd";
+			reg = <0x22c00c 0x8>;
+			status = "disabled";
+		};
 
 		mcasp0: mcasp@100000 {
 			compatible = "ti,da830-mcasp-audio";