Not sure? It's safe to say N.
+config IXP4XX_WATCHDOG
+ tristate "IXP4xx Watchdog"
+ depends on WATCHDOG && ARCH_IXP4XX
+ help
+ Say Y here if to include support for the watchdog timer
+ in the Intel IXP4xx network processors. This driver can
+ be built as a module by choosing M. The module will
+ be called ixp4xx_wdt.
+
+ Say N if you are unsure.
+
config SA1100_WATCHDOG
tristate "SA1100 watchdog"
depends on WATCHDOG && ARCH_SA1100