Partially parameterize the ALE and CLE masks; there's a bunch of
other stuff that should come from platform_data too, but this
patch doesn't change that stuff.

While we're doing this ... fix the related "sparse" errors.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>