[PATCH] ramips: fix ethernet MAC address on Omega2

[Michael Siegenthaler]

According to https://docs.onion.io/omega2-docs/mac-address.html, 0x28 is
the correct location to read the address on Onion Omega 2(+) devices.

This fixes a regression introduced by commit 77e850fe76e3 ("ramips: tidy up
MAC address setup for Linkit Smart and Omega2"), which was a cleanup that
intended to preserve existing behavior. In my testing with v19.07.7,
however, the MAC address determined from the device tree takes precedence
over the one set by 02_network, so the aforementioned commit actually
changed the behavior.

Signed-off-by: Michael Siegenthaler <msiegen at google.com>

diff --git a/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
b/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
index b6d2df4756..b18daf71d5 100644
--- a/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
+++ b/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
@@ -152,7 +152,7 @@
 };

 &ethernet {
- mtd-mac-address = <&factory 0x2e>;
+ mtd-mac-address = <&factory 0x28>;
 };

 &sdhci {