mfd: Add twl4030_bci platform_data back

Now that we have twl4030 charger driver, add back it's platform_data
(which was removed by f7ea2dc5


as unused).

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>