configs: stm32mp15: Enable Ethernet feature

This allows to enable Ethernet and use driver for
Synopsys Ethernet QoS device
Signed-off-by: NChristophe Roullier <christophe.roullier@st.com>
Acked-by: NJoe Hershberger <joe.hershberger@ni.com>

configs/stm32mp15_basic_defconfig

@@ -80,6 +80,8 @@ CONFIG_SPI_FLASH_STMICRO=y
 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

configs/stm32mp15_trusted_defconfig

@@ -72,6 +72,8 @@ CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
 # CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_SPI_FLASH_MTD=y
+CONFIG_DM_ETH=y
+CONFIG_ETH_DESIGNWARE=y
 CONFIG_PHY=y
 CONFIG_PHY_STM32_USBPHYC=y
 CONFIG_PINCONF=y