uhd_adc_self_cal - invoke calibration in some UHD devices.

UHDADCselfcalibrationAllowedoptions:--help help message

       --version
              print the version string and exit

       --args arg
              device address args, using usual UHD device selection specifiers.

uhd_adc_self_cal 4.1                                July 2021                                UHD_ADC_SELF_CAL(1)

       uhd_adc_self_cal - invoke calibration in some UHD devices.