iio: adc: stm32-adc: add missing vdda-supply
Add missing vdda-supply, analog power supply, to STM32 ADC. When vdda is an independent supply, it needs to be properly turned on or off to supply the ADC. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Fixes: 1add6988 ("iio: adc: Add support for STM32 ADC core"). Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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