From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Fri, 13 May 2016 21:02:55 +0200
Subject: ar71xx: Fix eth0 support for Ubiquiti UniFi AP AC

Fix eth0 support for the Ubiquiti UniFi AP AC
Signed-off-by: Paul Wassi <p.wassi at gmx.at>

Backport of OpenWrt r49277

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-ubnt-unifiac.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-ubnt-unifiac.c
index 3617ca7d5fc0fff00fce9741b5d9169fac8c83c8..072cf12a31a0921a8e9b90689864f5d981cd2c32 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-ubnt-unifiac.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-ubnt-unifiac.c
@@ -84,6 +84,7 @@ static void __init ubnt_unifiac_setup(void)
 		       eeprom + UNIFIAC_MAC0_OFFSET, 0);
 
 	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_SGMII;
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
 	ath79_eth0_data.phy_mask = BIT(4);
 	ath79_eth0_pll_data.pll_10 = 0x00001313;