regulator: Add missing platform_set_drvdata in tps6105x_regulator_probe

Otherwise, calling platform_get_drvdata in tps6105x_regulator_remove
returns NULL.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/drivers/regulator/tps6105x-regulator.c b/drivers/regulator/tps6105x-regulator.c
index a4d7f45..1011873 100644
--- a/drivers/regulator/tps6105x-regulator.c
+++ b/drivers/regulator/tps6105x-regulator.c
@@ -158,6 +158,7 @@
 			"failed to register regulator\n");
 		return ret;
 	}
+	platform_set_drvdata(pdev, tps6105x);
 
 	return 0;
 }