[source] ramips: fix WLI-TX4-AG300N boot and network

[LEDE Commits]

mkresin pushed a commit to source.git, branch master:
https://git.lede-project.org/29097b95ba266743f74401cbb905186bb74a414a

commit 29097b95ba266743f74401cbb905186bb74a414a
Author: Yo Abe <abe.geel at gmail.com>
AuthorDate: Thu Jan 12 03:07:14 2017 +0900

    ramips: fix WLI-TX4-AG300N boot and network
    
    Partition label "linux" prevents the root file system to be mounted at
    boot time leading to a kernel panic. After changing it to "firmware",
    the 2 uimage partitions "kernel", "rootfs" and squashfs "rootfs_data"
    are correctly recognized.
    
    The attached IP175C 10/100 MBit switch cannot connect to a link with
    fixed 1000Mbit speed. The correct link speed is 100MBit. The switch
    is detected and can be configured via mdio bus and should allow two
    separable VLANs to be configured for the 4 available ports.
    
    Signed-off-by: Yo Abe <abe.geel at gmail.com>
    [picked from openwrt/PR#330]
    Signed-off-by: Mathias Kresin <dev at kresin.me>
---
 target/linux/ramips/dts/WLI-TX4-AG300N.dts | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/target/linux/ramips/dts/WLI-TX4-AG300N.dts b/target/linux/ramips/dts/WLI-TX4-AG300N.dts
index 9d9b222..79e5c34 100644
--- a/target/linux/ramips/dts/WLI-TX4-AG300N.dts
+++ b/target/linux/ramips/dts/WLI-TX4-AG300N.dts
@@ -37,7 +37,7 @@
 		};
 
 		partition at 50000 {
-			label = "linux";
+			label = "firmware";
 			reg = <0x50000 0x3b0000>;
 		};
 	};
@@ -96,7 +96,16 @@
 	mtd-mac-address = <&factory 0x4>;
 
 	port at 0 {
-		mediatek,fixed-link = <1000 1 1 1>;
+		mediatek,fixed-link = <100 1 1 1>;
+	};
+
+	mdio-bus {
+		status = "okay";
+
+		phy0: ethernet-phy at 0 {
+			phy-mode = "mii";
+			reg = <0>;
+		};
 	};
 };