Switch RX path reset to be controlled by the TPL and use
RX SYSREF as external synchronization for the ADC TPL
Use TX SYSREF for synchornizing the TX DDS
implemented mux for temp reading either from internal or external
source; updated regmap; added param to identify source for temp
information; updated tacho measurements; added AVG_POW param used
for tacho measuremet average useful for simulations; defaults for
tacho measurements changed to params and added registers; added
prescaler for fsm control, FSM updated; changed register write
process; connected INTERNAL_SYSMONE to regmap, value can now be
read by software;
Adrian Costina
Sergiu Arpadi