rtlwifi: rtl8188ee: Fix endian issue

Sparse reports the following issue:

  CHECK   drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c:500:26: warning: incorrect type in initializer (different base types)
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c:500:26:    expected restricted __le32 [usertype] *pdesc
drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c:500:26:    got unsigned int [usertype] *
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200604005733.7905-3-Larry.Finger@lwfinger.net

drivers/net/wireless/realtek/rtlwifi/rtl8188ee/trx.c

@@ -497,7 +497,7 @@ void rtl88ee_tx_fill_desc(struct ieee80211_hw *hw,
 	dma_addr_t mapping;
 	u8 bw_40 = 0;
 	u8 short_gi = 0;
-	__le32 *pdesc = (u32 *)pdesc8;
+	__le32 *pdesc = (__le32 *)pdesc8;
 
 	if (mac->opmode == NL80211_IFTYPE_STATION) {
 		bw_40 = mac->bw_40;