SPI controller updates:
 - More sophisticated register setup - TX and RX registers alligned in array
 - Default register configuration for normal operation
 - Default register configuration for testpattern operation
 - ADC status read function
SPI controller updates:
 - More sophisticated register setup - TX and RX registers alligned in array
 - Default register configuration for normal operation
 - Default register configuration for testpattern operation
 - Function for setting custom testpattern
 - ADC status read function
Extended with - ADC configuaration command
                          -testpattern mode
                          -normal mode -> (Same as testpattern currently)
              - ADC configuation OK status display
Bug fix in start command. After ADC power up now it waits 1s before starts the configuration.