All bitstream related information is now in sdb.

Create a simlink to the release bitstream.
Will be easier to change to the next release.

This reverts commit b72160395b6af36fad4d4aa8b37cb984e75bf934.

From now on, gateware binaries must be taken from the files section
of the fmc-adc project.

This reverts commit a325b932dd04df878a55418ae8fb30ce951da81f.

vendor = 0xCE42 = CERN
device = echo "fmc-adc-100m14b4cha" | md5sum | cut -c1-8

Calibration data are now stored in a sdbfs file, not anymore in the
ipmi internal use area.
Using sdb-read to get the calibration data file.

Erase eeprom before reading content from binary file.