mfd: mfd_cell is now implicitly available to jz4740 drivers

No need to explicitly set the cell's platform_data/data_size.

Modify clients to use mfd_get_cell helper function instead of
accessing platform_data directly.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/power/jz4740-battery.c b/drivers/power/jz4740-battery.c
index 02414db..0938650 100644
--- a/drivers/power/jz4740-battery.c
+++ b/drivers/power/jz4740-battery.c
@@ -258,7 +258,7 @@
 		return -ENOMEM;
 	}
 
-	jz_battery->cell = pdev->dev.platform_data;
+	jz_battery->cell = mfd_get_cell(pdev);
 
 	jz_battery->irq = platform_get_irq(pdev, 0);
 	if (jz_battery->irq < 0) {