board: presidio-asic: Add CAxxxx Ethernet support

Add CAxxxx Ethernet support for the Cortina Access
Presidio Engineering Board

Signed-off-by: Alex Nemirovsky <alex.nemirovsky@cortina-access.com>
CC: Tom Rini <trini@konsulko.com>

arch/arm/dts/ca-presidio-engboard.dts

@@ -109,4 +109,35 @@
 		};
 
 	};
+
+	eth: ethnet@0xf4300000 {
+		compatible = "eth_cortina";
+		reg = <0x0 0xf4320000 0x34>,
+		      <0x0 0xf43290d8 0x04>,
+		      <0x0 0xf4304000 0x04>;
+
+		/* port0: phy address 1 - GMAC0: port 0
+		 * port1: phy address 2 - GMAC1: port 1
+		 * port2: phy address 3 - GMAC2: port 2
+		 * port3: phy address 4 - GMAC3: port 3
+		 * port4: phy address 5 - RGMII: port 4
+		 */
+		valid-port-map = <0x1f>;
+		valid-port-num = <5>;
+		valid-ports = <0x1 0x0>,
+			      <0x2 0x1>,
+			      <0x3 0x2>,
+			      <0x4 0x3>,
+			      <0x5 0x4>;
+		def-active-port = <0x3>;
+		inter-gphy-num = <6>;
+		inter-gphy-val = <0xf43380fc 0xbcd>,
+				 <0xf43380dc 0xeeee>,
+				 <0xf43380d8 0xeeee>,
+				 <0xf43380fc 0xbce>,
+				 <0xf43380c0 0x7777>,
+				 <0xf43380c4 0x7777>;
+		init-rgmii = <1>;
+		ni-xram-base = <0xF4500000>;
+	};
 };