regulator: da903x: add missing __devexit_p()

The remove function uses __devexit, so the .remove assignment needs
__devexit_p() to fix a build error with hotplug disabled.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Liam Girdwood <lrg@slimlogic.co.uk>
CC: Mike Rapoport <mike@compulab.co.il>
CC: Eric Miao <eric.miao@marvell.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
index 72b1549..c6628f5 100644
--- a/drivers/regulator/da903x.c
+++ b/drivers/regulator/da903x.c
@@ -497,7 +497,7 @@
 		.owner	= THIS_MODULE,
 	},
 	.probe		= da903x_regulator_probe,
-	.remove		= da903x_regulator_remove,
+	.remove		= __devexit_p(da903x_regulator_remove),
 };
 
 static int __init da903x_regulator_init(void)