adc_sample:
- extend list of supported devices with MCA_CC8X
adc_cmp_sample:
- Add '-t' argument to specify the type of device.
- Added checking of threshold ranges to avoid confusion between
raw and voltage configurations.
https://jira.digi.com/browse/DEL-6001
Signed-off-by: Hector Bujanda <hector.bujanda@digi.com>