da9063: Add watchdog support

The DA9063 PMIC is a multi-function device that provides
regulator, watchdog, RTC, and ON key functionalities.

Add support for the DA9063 PMIC watchdog functionality.

Based on the 6.11 kernel drivers/watchdog/da9063_wdt.c driver.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 0c3e991..90bc565 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -169,6 +169,12 @@
 	  This driver support all CPU ISAs supported by Cortina
 	  Access CAxxxx SoCs.
 
+config WDT_DA9063
+	bool "DA9063 watchdog timer support"
+	depends on WDT && DM_PMIC_DA9063
+	help
+	  Enable support for the watchdog timer in Dialog DA9063.
+
 config WDT_GPIO
 	bool "External gpio watchdog support"
 	depends on WDT