power: regulator: Add a driver for ACT8846 regulators

Add a full regulator driver for the ACT8846. This provides easy access to
voltage and current settings for each regulator.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index 77d64e43..434dd02 100644
--- a/drivers/power/regulator/Kconfig
+++ b/drivers/power/regulator/Kconfig
@@ -16,6 +16,15 @@
 	for this purpose if PMIC I/O driver is implemented or dm_scan_fdt_node()
 	otherwise. Detailed information can be found in the header file.
 
+config REGULATOR_ACT8846
+	bool "Enable driver for ACT8846 regulator"
+	depends on DM_REGULATOR && PMIC_ACT8846
+	---help---
+	Enable support for the regulator functions of the ACT8846 PMIC. The
+	driver implements get/set api for the various BUCKS and LDOS supported
+	by the PMIC device. This driver is controlled by a device tree node
+	which includes voltage limits.
+
 config DM_REGULATOR_PFUZE100
 	bool "Enable Driver Model for REGULATOR PFUZE100"
 	depends on DM_REGULATOR && DM_PMIC_PFUZE100