Patch from Nicolas Pitre

A more elegant solution could be applied which would require more work.
However there is only one platform using both chips (Lubbock) and half
of the SA1111 features are unusable due to botched DMA support at the
PCB level anyway.  Therefore this solution should be sufficient for
now.
Also removed the SADIV defines which use would not constitute good
programming practice. Divisors should be computed directly in the code
especially since different PXA2xx versions have different clock source
frequencies.  No in-tree driver uses them so this is low impact..
Finally changed alignment to fit rest of file.

Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King