configs: migrate CONFIG_PHY_AQUANTIA to Kconfig

The aquantia driver requires both CONFIG_PHY_GIGE and CONFIG_PHYLIB_10G.

Signed-off-by: Jeremy Gebben <jgebben@sweptlaser.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/T2081QDS_NAND_defconfig b/configs/T2081QDS_NAND_defconfig
index d0147d8..56792e1 100644
--- a/configs/T2081QDS_NAND_defconfig
+++ b/configs/T2081QDS_NAND_defconfig
@@ -50,7 +50,7 @@
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_SST=y
 CONFIG_PHYLIB=y
-CONFIG_PHY_GIGE=y
+CONFIG_PHY_AQUANTIA=y
 CONFIG_E1000=y
 CONFIG_MII=y
 CONFIG_SYS_NS16550=y