drivers: watchdog: Kconfig: Remove redundant 'default n' properties

Bool symbols implicitly default to 'n'.

A 'default n' can make sense e.g. in a Kconfig.defconfig file, if you
want to override a 'default y' on the base definition of the symbol. It
isn't used like that on any of these symbols though, and is
inconsistent.

This will make the auto-generated Kconfig documentation have "No
defaults. Implicitly defaults to n." as well, which is clearer than
'default n if ...'

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>

drivers/watchdog/Kconfig.cmsdk_apb

@@ -18,7 +18,6 @@ config WDOG_CMSDK_APB
 config WDOG_CMSDK_APB_START_AT_BOOT
 	bool "Start Watchdog during boot"
 	depends on WDOG_CMSDK_APB
-	default n
 	help
 	  Enable this setting to allow WDOG to be automatically started
 	  during device initialization. Note that once WDOG is started

drivers/watchdog/Kconfig.mcux_wdog

@@ -9,6 +9,5 @@ menuconfig WDT_MCUX_WDOG
 	bool "MCUX WDOG driver"
 	depends on HAS_MCUX && CLOCK_CONTROL
 	select HAS_DTS_WDT
-	default n
 	help
 	  Enable the mcux wdog driver.

drivers/watchdog/Kconfig.nrfx

@@ -9,6 +9,5 @@ menuconfig WDT_NRFX
 	depends on SOC_FAMILY_NRF && CLOCK_CONTROL_NRF5
 	select HAS_DTS_WDT
 	select NRFX_WDT
-	default n
 	help
 	  Enable support for nrfx WDT driver for nRF MCU series.

drivers/watchdog/Kconfig.qmsi

@@ -8,7 +8,6 @@
 
 config WDT_QMSI
 	bool "QMSI Watchdog driver"
-	default n
 	help
 	  This option enables the QMSI watchdog driver.
 	  This driver is simply a shim driver based on the watchdog
@@ -24,6 +23,5 @@ config WDT_QMSI_API_REENTRANCY
 	bool
 	prompt "WDT shim driver API reentrancy"
 	depends on WDT_QMSI
-	default n
 	help
 	  Enable support for WDT shim driver API reentrancy.