[PATCH v2 1/1] hwmon: (pmbus) Add regulator supply into macro

[Marcello Sylvester Bauer <sylv@sylv.io>]

Add regulator supply into PWBUS_REGULATOR macro. This makes it optional
to define a vin-supply in DT. Not defining a supply will add a dummy
regulator supply instead and only cause the following debug output:

```
Looking up vin-supply property in node [...] failed
```

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
---
 drivers/hwmon/pmbus/pmbus.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
index e0aa8aa46d8c..38f049d68d32 100644
--- a/drivers/hwmon/pmbus/pmbus.h
+++ b/drivers/hwmon/pmbus/pmbus.h
@@ -464,6 +464,7 @@ extern const struct regulator_ops pmbus_regulator_ops;
 #define PMBUS_REGULATOR(_name, _id)				\
 	[_id] = {						\
 		.name = (_name # _id),				\
+		.supply_name = "vin",				\
 		.id = (_id),					\
 		.of_match = of_match_ptr(_name # _id),		\
 		.regulators_node = of_match_ptr("regulators"),	\
-- 
2.34.1