configs: stm32mp15: Enable ENV_IS_IN_UBI

Add all relative flags needed by ENV_IS_IN_UBI

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
index 75c5e9d..23fdb31 100644
--- a/configs/stm32mp15_basic_defconfig
+++ b/configs/stm32mp15_basic_defconfig
@@ -39,13 +39,17 @@
 CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_MTDPARTS=y
+CONFIG_CMD_UBI=y
 # CONFIG_SPL_DOS_PARTITION is not set
 CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
 CONFIG_ENV_IS_NOWHERE=y
 CONFIG_ENV_IS_IN_EXT4=y
+CONFIG_ENV_IS_IN_UBI=y
 CONFIG_ENV_EXT4_INTERFACE="mmc"
 CONFIG_ENV_EXT4_DEVICE_AND_PART="0:auto"
 CONFIG_ENV_EXT4_FILE="/uboot.env"
+CONFIG_ENV_UBI_PART="UBI"
+CONFIG_ENV_UBI_VOLUME="uboot_config"
 CONFIG_STM32_ADC=y
 CONFIG_USB_FUNCTION_FASTBOOT=y
 CONFIG_FASTBOOT_BUF_ADDR=0xC0000000