The attached patch makes cache flushing work correctly on DMA consistent
memory for the frv arch.  On the FRV unmapped memory can't be flushed
directly, but has to be kmapped first since the flush instructions take
virtual pointers not physical ones.

It also splits the MMU and !MMU versions into separate files.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>