FmcAdc100M14b4cha spec firmware release 4.0

Changelog:
- Update GN4124 core (don't hang on unmapped wishbone address read).
- Add shot counter.
- Add sampling frequency counter.
- Check number of samples in multishot (prevent acq start if bigegr than multishot dpram).
- Add programmable glitch filter to threshold detection (internal hardware trigger).
- Add internal hardware trigger debug mode (to help threshold glitch filter setup).
- Make ADC data saturation level programmable.
This tag has no release notes.