arch/arm/boot/dts/adi-fmcomms3-up-down-converter: Add FMCOMMS3 Up/Down converter support

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
drivers/iio/adc/cf_axi_adc_core: reset all

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
drivers/iio/adc/cf_axi_adc_core: Update AD9434 support

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>