rtlwifi: fix spelling mistake: "encrypiton" -> "encryption"

trivial fix to spelling mistake in RT_TRACE message
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/core.c

@@ -1529,7 +1529,7 @@ static int rtl_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 		key_type = AESCMAC_ENCRYPTION;
 		RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:CMAC\n");
 		RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
-			 "HW don't support CMAC encrypiton, use software CMAC encrypiton\n");
+			 "HW don't support CMAC encryption, use software CMAC encryption\n");
 		err = -EOPNOTSUPP;
 		goto out_unlock;
 	default: