ARM: dts: blanche: add Ethernet pins

Add the (previously omitted) pin data for the SMSC LAN89218 Ethernet chip
to  the Blanche board's device tree:  the chip's IRQ output is connected to
the SoC's IRQ0 pin and its nCS input is connected to the SoC's EX_CS0# pin.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7792-blanche.dts

@@ -50,6 +50,9 @@ ethernet@18000000 {
 		reg-io-width = <4>;
 		vddvario-supply = <&d3_3v>;
 		vdd33a-supply = <&d3_3v>;
+
+		pinctrl-0 = <&lan89218_pins>;
+		pinctrl-names = "default";
 	};
 };
 
@@ -67,6 +70,17 @@ scif3_pins: scif3 {
 		groups = "scif3_data";
 		function = "scif3";
 	};
+
+	lan89218_pins: lan89218 {
+		intc {
+			groups = "intc_irq0";
+			function = "intc";
+		};
+		lbsc {
+			groups = "lbsc_ex_cs0";
+			function = "lbsc";
+		};
+	};
 };
 
 &scif0 {