Cortex-M processors don't have an MMU, but can still have caches
that need software management, so on those platforms we don't want
to include the MMU related functions.
While here, remove an outdated section of a comment referring to
deprecated cache maintenance functions which no longer exist.
Change-Id: I6f0fe694560bdee25ed7c69a846bf46e3e544cb1
The old cache coherency function names where wrong and misleading.
The new names are (purposely different from vendor manuals)
* commit_* (write-back only)
* discard_* (removing lines from cache only)
* commit_discard_* (write-back and removing lines from cache)
It's suspected the old names have led to wrong uses. The old names still exist
(as aliases) so every call via the old names need to be double checked and changed
to the new name.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28045 a1c6a512-1295-4272-9138-f99709370657
