mfd: tps6586x: correct device name of the regulator cell

Change the device name of the regulator function to the one chosen for
MODULE_ALIAS. This fixes kernel auto-module loading for the regulator function.

Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c
index 721b918..4b93ed4 100644
--- a/drivers/mfd/tps6586x.c
+++ b/drivers/mfd/tps6586x.c
@@ -107,7 +107,7 @@
 		.name = "tps6586x-gpio",
 	},
 	{
-		.name = "tps6586x-pmic",
+		.name = "tps6586x-regulator",
 	},
 	{
 		.name = "tps6586x-rtc",