mfd: adp5585: Support getting vdd regulator

Make sure we get and enable the VDD supply (if available).

Reviewed-by: Lee Jones <lee@kernel.org>
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250701-dev-adp5589-fw-v7-18-b1fcfe9e9826@analog.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: nunojsa

drivers/mfd/adp5585.c

@@ -17,6 +17,7 @@
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/types.h>
 
 enum {
@@ -709,6 +710,10 @@ static int adp5585_i2c_probe(struct i2c_client *i2c)
 	if (IS_ERR(regmap_config))
 		return PTR_ERR(regmap_config);
 
+	ret = devm_regulator_get_enable(&i2c->dev, "vdd");
+	if (ret)
+		return ret;
+
 	adp5585->regmap = devm_regmap_init_i2c(i2c, regmap_config);
 	if (IS_ERR(adp5585->regmap))
 		return dev_err_probe(&i2c->dev, PTR_ERR(adp5585->regmap),