staging: rtl8192u: ieee80211: Fix spelling mistake

Replace explicitely with explicitly to get rid of checkpatch warning.
Signed-off-by: Vatsala Narang <vatsalanarang@gmail.com>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c

@@ -381,7 +381,8 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
 				       (*crypt)->priv);
 		sec.flags |= BIT(key);
 		/* This ensures a key will be activated if no key is
-		 * explicitely set */
+		 * explicitly set
+		 */
 		if (key == sec.active_key)
 			sec.flags |= SEC_ACTIVE_KEY;
 		ieee->tx_keyidx = key;