power: pmic: add Ricoh RN5T567 PMIC support

Add device model enabled PMIC driver for Ricoh RN5T567 PMIC used
on Colibri iMX7.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 69f8d51..13d293a 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -127,6 +127,14 @@
 	driver provides basic register access and sets up the attached
 	regulators if regulator support is enabled.
 
+config PMIC_RN5T567
+	bool "Enable driver for Ricoh RN5T567 PMIC"
+	depends on DM_PMIC
+	---help---
+	The RN5T567 is a PMIC with 4 step-down DC/DC converters, 5 LDO
+	regulators Real-Time Clock and 4 GPIOs. This driver provides
+	register access only.
+
 config PMIC_TPS65090
 	bool "Enable driver for Texas Instruments TPS65090 PMIC"
 	depends on DM_PMIC