watchdog: Fix omap watchdogs to enable the magic close bit

This allows testing the watchdog easily with distros just by
doing pkill -9 watchdog.

Reported-by: Thomas Dziedzic <gostrc@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/omap_wdt.c

@@ -189,7 +189,7 @@ static int omap_wdt_set_timeout(struct watchdog_device *wdog,
 }
 
 static const struct watchdog_info omap_wdt_info = {
-	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+	.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
 	.identity = "OMAP Watchdog",
 };
 

drivers/watchdog/retu_wdt.c

@@ -94,7 +94,7 @@ static int retu_wdt_set_timeout(struct watchdog_device *wdog,
 }
 
 static const struct watchdog_info retu_wdt_info = {
-	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+	.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
 	.identity = "Retu watchdog",
 };
 

drivers/watchdog/twl4030_wdt.c

@@ -57,7 +57,7 @@ static int twl4030_wdt_set_timeout(struct watchdog_device *wdt,
 }
 
 static const struct watchdog_info twl4030_wdt_info = {
-	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+	.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
 	.identity = "TWL4030 Watchdog",
 };