ARM: configs: sunxi: Enable MICREL_PHY

Include support for Micrel KSZ9031 PHY driver in sunxi_defconfig,
which fixes issues of link not coming up at boot time with
certain link partners.

Micrel KSZ9031 PHY chip is used on Olimex A20-OLinuXino-LIME2
boards.

The errata fix itself has been implemented in commit
"3aed3e2a: net: phy: micrel: add Asym Pause workaround"
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

arch/arm/configs/sunxi_defconfig

@@ -56,6 +56,7 @@ CONFIG_SUN4I_EMAC=y
 CONFIG_STMMAC_ETH=y
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
+CONFIG_MICREL_PHY=y
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
 CONFIG_KEYBOARD_SUN4I_LRADC=y