trivial: Fix misspelling of firmware

Fix misspelling of firmware.

Signed-off-by: Nick Andrew <nick@nick-andrew.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index a71b08c..9d5f97d 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2562,7 +2562,7 @@
 
 	/* api_ver should match the api version forming part of the
 	 * firmware filename ... but we don't check for that and only rely
-	 * on the API version read from firware header from here on forward */
+	 * on the API version read from firmware header from here on forward */
 
 	if (api_ver < api_min || api_ver > api_max) {
 		IWL_ERR(priv, "Driver unable to support your firmware API. "