ARM: mvebu: dt: add missing alias 'eth3' on Armada XP mv78260

It was correctly set on mv78460 but not on mv78260, resulting in my
OpenBlocks AX3-4 retrieving only 3 of its 4 MAC addresses from the
boot loader.

Cc: Thomas Petazzoni <redacted>
Cc: Gregory CLEMENT <redacted>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
 arch/arm/boot/dts/armada-xp-mv78260.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/armada-xp-mv78260.dtsi b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
index 6660968..9480cf8 100644
--- a/arch/arm/boot/dts/armada-xp-mv78260.dtsi
+++ b/arch/arm/boot/dts/armada-xp-mv78260.dtsi

@@ -23,6 +23,7 @@
 		gpio0 = &gpio0;
 		gpio1 = &gpio1;
 		gpio2 = &gpio2;
+		eth3 = &eth3;
 	};
 
 	cpus {

@@ -291,7 +292,7 @@
 				interrupts = <91>;
 			};
 
-			ethernet at 34000 {
+			eth3: ethernet at 34000 {
 				compatible = "marvell,armada-370-neta";
 				reg = <0x34000 0x4000>;
 				interrupts = <14>;

-- 
1.7.12.2.21.g234cd45.dirty