configs: stm32mp: add CONFIG_STM32_FMC2_EBI

This patch enables the support of FMC2 EBI.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
index 5c500a1..2094183 100644
--- a/configs/stm32mp15_basic_defconfig
+++ b/configs/stm32mp15_basic_defconfig
@@ -88,6 +88,7 @@
 CONFIG_LED_GPIO=y
 CONFIG_DM_MAILBOX=y
 CONFIG_STM32_IPCC=y
+CONFIG_STM32_FMC2_EBI=y
 CONFIG_DM_MMC=y
 CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_STM32_SDMMC2=y