rtlwifi: rtl8821ae: fix spelling mistake: "faill" -> "failed"

Trivial fix to spelling mistake in RT_TRACE message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/rtl8821ae/fw.c

@@ -98,7 +98,7 @@ static int _rtl8821ae_fw_free_to_go(struct ieee80211_hw *hw)
 
 	if (counter >= FW_8821AE_POLLING_TIMEOUT_COUNT) {
 		RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
-			 "chksum report faill ! REG_MCUFWDL:0x%08x .\n",
+			 "chksum report fail! REG_MCUFWDL:0x%08x .\n",
 			  value32);
 		goto exit;
 	}