configs: rockchip: Enable ethernet driver on RK356x boards

Enable DWC_ETH_QOS_ROCKCHIP and related PHY driver on RK356x boards that
have an enabled gmac node.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/lubancat-2-rk3568_defconfig b/configs/lubancat-2-rk3568_defconfig
index b01d3bd..80ae6ec 100644
--- a/configs/lubancat-2-rk3568_defconfig
+++ b/configs/lubancat-2-rk3568_defconfig
@@ -61,6 +61,9 @@
 CONFIG_MMC_SDHCI_SDMA=y
 CONFIG_MMC_SDHCI_ROCKCHIP=y
 # CONFIG_SPI_FLASH is not set
+CONFIG_PHY_REALTEK=y
+CONFIG_DWC_ETH_QOS=y
+CONFIG_DWC_ETH_QOS_ROCKCHIP=y
 CONFIG_PHY_ROCKCHIP_INNO_USB2=y
 CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
 CONFIG_SPL_PINCTRL=y