sunxi: Enable ethernet on newer Olimex OLinuXino-A20-Lime2-eMMC

Olimex OLinuXino LIME2 rev. H through L uses Micrel KSZ9031 PHY.

This enables the Micrel PHY for A20-OLinuXino-Lime2-eMMC_defconfig.

Signed-off-by: Jonas Smedegaard <dr@jones.dk>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/configs/A20-OLinuXino-Lime2-eMMC_defconfig b/configs/A20-OLinuXino-Lime2-eMMC_defconfig
index b1a38d7..f9f8f14 100644
--- a/configs/A20-OLinuXino-Lime2-eMMC_defconfig
+++ b/configs/A20-OLinuXino-Lime2-eMMC_defconfig
@@ -19,6 +19,8 @@
 CONFIG_SCSI_AHCI=y
 CONFIG_DFU_RAM=y
 CONFIG_FASTBOOT_CMD_OEM_FORMAT=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_PHY_REALTEK=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_RGMII=y