regulator: add driver for the TPS65219 BUCK & LDO regulators

The TPS65219 I2S PMIC features 3 Buck converters and 4 linear regulators,
2 GPOs, 1 GPIO, and 3 multi-function-pin.

This adds the driver for the Buck converters & linear regulators.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index cd253b9..9145408 100644
--- a/drivers/power/regulator/Kconfig
+++ b/drivers/power/regulator/Kconfig
@@ -371,3 +371,12 @@
         help
           Enable this option if you want to support regulators exposed through
 	  the SCMI voltage domain protocol by a SCMI server.
+
+config DM_REGULATOR_TPS65219
+	bool "Enable driver for TPS65219 PMIC regulators"
+        depends on PMIC_TPS65219
+	help
+	This enables implementation of driver-model regulator uclass
+	features for REGULATOR TPS65219 and the family of TPS65219 PMICs.
+	TPS65219 series of PMICs have 3 single phase BUCKs & 4 LDOs.
+	The driver implements get/set api for value and enable.