ARM: multi_v7_defconfig: add the Atmel sama5d2-compatible ADC driver

Add the new sama5d2-compatible ADC driver as a module.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/configs/multi_v7_defconfig

@@ -773,6 +773,7 @@ CONFIG_EXTCON=y
 CONFIG_TI_AEMIF=y
 CONFIG_IIO=y
 CONFIG_AT91_ADC=m
+CONFIG_AT91_SAMA5D2_ADC=m
 CONFIG_BERLIN2_ADC=m
 CONFIG_EXYNOS_ADC=m
 CONFIG_VF610_ADC=m