ARM: at91/dt: sama5d4: add the macb1 node

The second macb is present on all the sama5d4 SoCs. Let's add a node
reflecting it in the device tree.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

arch/arm/boot/dts/sama5d4.dtsi

@@ -1189,6 +1189,19 @@ tcb1: timer@fc020000 {
 				clock-names = "t0_clk", "slow_clk";
 			};
 
+			macb1: ethernet@fc028000 {
+				compatible = "atmel,sama5d4-gem";
+				reg = <0xfc028000 0x100>;
+				interrupts = <55 IRQ_TYPE_LEVEL_HIGH 3>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_macb1_rmii>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				clocks = <&macb1_clk>, <&macb1_clk>;
+				clock-names = "hclk", "pclk";
+				status = "disabled";
+			};
+
 			adc0: adc@fc034000 {
 				compatible = "atmel,at91sam9x5-adc";
 				reg = <0xfc034000 0x100>;
@@ -1635,6 +1648,23 @@ AT91_PIOB 17 AT91_PERIPH_A AT91_PINCTRL_NONE	/* G0_MDIO */
 					};
 				};
 
+				macb1 {
+					pinctrl_macb1_rmii: macb1_rmii-0 {
+						atmel,pins =
+							<AT91_PIOA 14 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_TX0 */
+							 AT91_PIOA 15 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_TX1 */
+							 AT91_PIOA 12 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_RX0 */
+							 AT91_PIOA 13 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_RX1 */
+							 AT91_PIOA 10 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_RXDV */
+							 AT91_PIOA 11 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_RXER */
+							 AT91_PIOA  4 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_TXEN */
+							 AT91_PIOA  2 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_TXCK */
+							 AT91_PIOA 22 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_MDC */
+							 AT91_PIOA 23 AT91_PERIPH_B AT91_PINCTRL_NONE	/* G1_MDIO */
+							>;
+					};
+				};
+
 				mmc0 {
 					pinctrl_mmc0_clk_cmd_dat0: mmc0_clk_cmd_dat0 {
 						atmel,pins =