iwlwifi: fix typo 'IWL_WATCHHDOG_DISABLED'

Commit 7c5ba4a830cbb730770129b0004e2a06e47dbac5 ("iwlwifi: move queue
watchdog into transport") introduced the named constant
'IWL_WATCHHDOG_DISABLED'. Rename it to 'IWL_WATCHDOG_DISABLED'.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-config.h b/drivers/net/wireless/iwlwifi/iwl-config.h
index e9accfc..10e4793 100644
--- a/drivers/net/wireless/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/iwlwifi/iwl-config.h
@@ -113,7 +113,7 @@
 #define IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE	0
 
 /* TX queue watchdog timeouts in mSecs */
-#define IWL_WATCHHDOG_DISABLED	0
+#define IWL_WATCHDOG_DISABLED	0
 #define IWL_DEF_WD_TIMEOUT	2000
 #define IWL_LONG_WD_TIMEOUT	10000
 #define IWL_MAX_WD_TIMEOUT	120000