watchdog: imx_sc_wdt: Don't disable WDT in suspend

watchdog: imx_sc_wdt: Don't disable WDT in suspend

Parts of the suspend and resume chain is left unprotected if we disable
the WDT here.

>From experiments we can see that the SCU disables and re-enables the WDT
when we enter and leave suspend to ram. By not touching the WDT here we
are protected by the WDT all the way to the SCU.

Signed-off-by: Jonas Blixt <jonas.blixt@actia.se>
CC: Anson Huang <anson.huang@nxp.com>
Fixes: 986857acbc9a ("watchdog: imx_sc: Add i.MX system controller watchdog support")
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240801121845.1465765-1-jonas.blixt@actia.se
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>