ARM: multi_v7_defconfig: add FMC2 EBI controller support

This patch adds FMC2 EBI controller support used by STM32MP SOCs.

Link: https://lore.kernel.org/r/20200924101342.4707-1-alexandre.torgue@st.com
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/configs/multi_v7_defconfig

@@ -1011,6 +1011,7 @@ CONFIG_EXTCON_MAX14577=m
 CONFIG_EXTCON_MAX77693=m
 CONFIG_EXTCON_MAX8997=m
 CONFIG_TI_AEMIF=y
+CONFIG_STM32_FMC2_EBI=y
 CONFIG_EXYNOS5422_DMC=m
 CONFIG_IIO=y
 CONFIG_IIO_SW_TRIGGER=y