regulator: mt6315: Add regulator supplies

The MT6315 family of PMICs has 4 buck regulators. Each regulator has a
separate supply.

Add these supplies to the driver.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://patch.msgid.link/20260326081050.1115201-3-wenst@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: wens

drivers/regulator/mt6315-regulator.c

@@ -31,10 +31,11 @@ struct mt6315_chip {
 	struct regmap *regmap;
 };
 
-#define MT_BUCK(_name, _bid, _vsel)				\
+#define MT_BUCK(_name, _bid, _supply, _vsel)			\
 [_bid] = {							\
 	.desc = {						\
 		.name = _name,					\
+		.supply_name = _supply,				\
 		.of_match = of_match_ptr(_name),		\
 		.regulators_node = "regulators",		\
 		.ops = &mt6315_volt_range_ops,			\
@@ -190,10 +191,10 @@ static const struct regulator_ops mt6315_volt_range_ops = {
 };
 
 static const struct mt6315_regulator_info mt6315_regulators[MT6315_VBUCK_MAX] = {
-	MT_BUCK("vbuck1", MT6315_VBUCK1, MT6315_BUCK_TOP_ELR0),
-	MT_BUCK("vbuck2", MT6315_VBUCK2, MT6315_BUCK_TOP_ELR2),
-	MT_BUCK("vbuck3", MT6315_VBUCK3, MT6315_BUCK_TOP_ELR4),
-	MT_BUCK("vbuck4", MT6315_VBUCK4, MT6315_BUCK_TOP_ELR6),
+	MT_BUCK("vbuck1", MT6315_VBUCK1, "pvdd1", MT6315_BUCK_TOP_ELR0),
+	MT_BUCK("vbuck2", MT6315_VBUCK2, "pvdd2", MT6315_BUCK_TOP_ELR2),
+	MT_BUCK("vbuck3", MT6315_VBUCK3, "pvdd3", MT6315_BUCK_TOP_ELR4),
+	MT_BUCK("vbuck4", MT6315_VBUCK4, "pvdd4", MT6315_BUCK_TOP_ELR6),
 };
 
 static const struct regmap_config mt6315_regmap_config = {