regulator: tps65910: Add regulator info for RTC rail

Adding missing regulator info for VRTC rail for device
tps65911. The regulator voltage rail index start from
VRTC which is defined as 0.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index 5c15ba0..6742418 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -175,6 +175,9 @@
 
 static struct tps_info tps65911_regs[] = {
 	{
+		.name = "VRTC",
+	},
+	{
 		.name = "VIO",
 		.min_uV = 1500000,
 		.max_uV = 3300000,