regulator: vexpress: Add terminating entry for vexpress_regulator_of_match table

The of_device_id table is supposed to be zero-terminated.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/vexpress.c b/drivers/regulator/vexpress.c
index 1702945..1d55811 100644
--- a/drivers/regulator/vexpress.c
+++ b/drivers/regulator/vexpress.c
@@ -126,6 +126,7 @@
 
 static struct of_device_id vexpress_regulator_of_match[] = {
 	{ .compatible = "arm,vexpress-volt", },
+	{ }
 };
 
 static struct platform_driver vexpress_regulator_driver = {