mtd: Use mfd_data instead of driver_data for tmio_nand

Use mfd_data for passing information from mfd drivers to mfd
clients.  The mfd_cell's driver_data field is being phased out.

Clients that were using driver_data now access .mfd_data
via mfd_get_data().  This changes tmio-nand only; mfd drivers with
other cells are not modified.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index 7f7b9fa..ecb045b 100644
--- a/drivers/mfd/tc6393xb.c
+++ b/drivers/mfd/tc6393xb.c
@@ -693,7 +693,7 @@
 			goto err_setup;
 	}
 
-	tc6393xb_cells[TC6393XB_CELL_NAND].driver_data = tcpd->nand_data;
+	tc6393xb_cells[TC6393XB_CELL_NAND].mfd_data = tcpd->nand_data;
 	tc6393xb_cells[TC6393XB_CELL_FB].driver_data = tcpd->fb_data;
 
 	ret = mfd_add_devices(&dev->dev, dev->id,