configs: stm32mp15: Enable Ethernet feature

This allows to enable Ethernet and use driver for
Synopsys Ethernet QoS device

Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
index fd94c4a..4aa184f 100644
--- a/configs/stm32mp15_basic_defconfig
+++ b/configs/stm32mp15_basic_defconfig
@@ -80,6 +80,8 @@
 CONFIG_SPI_FLASH_WINBOND=y
 # CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_SPI_FLASH_MTD=y
+CONFIG_DM_ETH=y
+CONFIG_DWC_ETH_QOS=y
 CONFIG_PHY=y
 CONFIG_PHY_STM32_USBPHYC=y
 CONFIG_PINCONF=y