watchdog: Fix typo "unexpectdly"

Correct typo "unexpectdly" to "unexpectedly" in pnx4008_wdt.c
and stmp3xxx_wdt.c

Signed-off-by: Masanari Iida<standby24x7@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/stmp3xxx_wdt.c b/drivers/watchdog/stmp3xxx_wdt.c
index 4c2a4e8..e37d811 100644
--- a/drivers/watchdog/stmp3xxx_wdt.c
+++ b/drivers/watchdog/stmp3xxx_wdt.c
@@ -174,7 +174,7 @@
 	if (!nowayout) {
 		if (!test_bit(WDT_OK_TO_CLOSE, &wdt_status)) {
 			wdt_ping();
-			pr_debug("%s: Device closed unexpectdly\n", __func__);
+			pr_debug("%s: Device closed unexpectedly\n", __func__);
 			ret = -EINVAL;
 		} else {
 			wdt_disable();