watchdog: Clean up defaults for imx_watchdog / ulp_wdog

In imx_watchdog, clean up the comment to just note the range now, as we
do not need to set the default here as Kconfig does this for us. For
ulp_wdog, set the default value via Kconfig instead.

Cc: Stefan Roese <sr@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/watchdog/imx_watchdog.c b/drivers/watchdog/imx_watchdog.c
index 3586246..894158b 100644
--- a/drivers/watchdog/imx_watchdog.c
+++ b/drivers/watchdog/imx_watchdog.c
@@ -68,13 +68,8 @@
 
 	/*
 	 * The timer watchdog can be set between
-	 * 0.5 and 128 Seconds. If not defined
-	 * in configuration file, sets 128 Seconds
+	 * 0.5 and 128 Seconds.
 	 */
-#ifndef CONFIG_WATCHDOG_TIMEOUT_MSECS
-#define CONFIG_WATCHDOG_TIMEOUT_MSECS 128000
-#endif
-
 	timeout = max_t(u64, timeout, TIMEOUT_MIN);
 	timeout = min_t(u64, timeout, TIMEOUT_MAX);
 	timeout = lldiv(timeout, 500) - 1;