[WATCHDOG] pcwd.c card_found-- fix.

When doing a __devexit from a card we should also
decrement the cards_found counter.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c
index 85c94b2..3329cbf 100644
--- a/drivers/char/watchdog/pcwd.c
+++ b/drivers/char/watchdog/pcwd.c
@@ -828,6 +828,7 @@
 	unregister_reboot_notifier(&pcwd_notifier);
 	release_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4);
 	current_readport = 0x0000;
+	cards_found--;
 }
 
 /*