ARM: multi_v7_defconfig: add FMC2 NAND controller support

This patch adds FMC2 NAND controller support used by STM32MP SOCs.
Signed-off-by: NChristophe Kerello <christophe.kerello@st.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@st.com>

arch/arm/configs/multi_v7_defconfig

@@ -197,6 +197,7 @@ CONFIG_MTD_NAND_GPMI_NAND=y
 CONFIG_MTD_NAND_BRCMNAND=y
 CONFIG_MTD_NAND_VF610_NFC=y
 CONFIG_MTD_NAND_DAVINCI=y
+CONFIG_MTD_NAND_STM32_FMC2=y
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_UBI=y
 CONFIG_BLK_DEV_LOOP=y