Host: Hack UHD I/Q balance utilities to run without errors on UmTRX.

I'm not sure how well it works, though. More work is needed to make this working properly. At least we should introduce CAL antenna setting for UmTRX.
Host: More hacks to make I/Q balance utils to work.
Host: db_eeprom have serial number now. Revert a hack to ignore it.