ZPU: DEBUG: Debug print when host sends a command to SPI_SS_AUX1 or SPI_SS_AUX2.
Host: Remove unused functions from db_lms6002d class.
Host: Fix typo in comments in db_lms.cpp.
Host: Remove declarations of functions we no longer implement.
Host: Implement a single place to set UmTRX clock frequency and a way to talk to both LMS SPI and AUX SPI.
Host: BETA: A test code to talk to a synthetizer on UmSEL.

In its current version it sends a predefined set of commands to the synthetizer (see the second #ifdef). Also there is no detection whether UmSEL is actually installed or not.