| 
| Now that all of the remaining dma_mapping_ops have had their
| map_/unmap_single
| functions updated to become map/unmap_page functions, there is no need
| to have
| the map_/unmap_single function pointers in the dma_mapping_ops.
| 
| So, take this opportunity to remove them and also remove the code that
| does
| the checking for which set of functions to use.
| 
| Signed-off-by: Mark Nelson [off-list ref]

LGTM; test-built and booted an 8641 to double check.  I'm glad to see
the hackery removed. 

Acked-by: Becky Bruce <redacted>

Cheers,
-Becky