While this appears to be a backward change, this moves the _register_
definitions (their addresses) and the actually specific to f4/f7
numbering back into the explicit headers. Potentially this could be
pulled out again, but it's not much code.
This then allows the stm32l1 to use all the rest of this code, with the
differences really being just the addresses of the registers.
Never seen any reason for these noisy verbose defines. They're not
helpful, and we've never needed them for doing sequence setting code
anyway. Just drop them.
