With the addition of a platform device mfd_cell pointer, MFD drivers
can go back to passing platform data back to their sub drivers.
This allows for an mfd_cell->mfd_data removal and thus keep the
sub drivers MFD agnostic. This is mostly needed for non MFD aware
sub drivers.

Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Rename the platform_data variable to imply a distinction between
common platform_data driver usage (typically accessed via
pdev->dev.platform_data) and the way MFD passes data down to
clients (using a wrapper named mfd_get_data).

All clients have already been changed to use the wrapper function,
so this can be a quick single-commit change that only touches things
in drivers/mfd.
Signed-off-by: NAndres Salomon <dilinger@queued.net>
Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The cell's platform_data is now accessed with a helper function;
change clients to use that, and remove the now-unused data_size.
Signed-off-by: NAndres Salomon <dilinger@queued.net>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The Janz CMOD-IO PCI MODULbus carrier board is a PCI to MODULbus bridge,
which may host many different types of MODULbus daughterboards, including
CAN and GPIO controllers.
Signed-off-by: NIra W. Snyder <iws@ovro.caltech.edu>
Reviewed-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>