clock/nva3: Allow user reclocking
fb/ramnva3: WIP Very special link training unit
fb/ramnva3: Use ram->base structs instead of local structs

This will ease the use of generic timing and MR generation bits later
fb/ramnva3: Ressurect timing calculation code
fb/nva3: WIP Start on some reclocking bits
fb/sddr3: WIP Expand MR generation with various bits