staging: rtl8192e: Remove struct rtllib_hdr_4addr

Replace struct rtllib_hdr_4addr with struct ieee80211_hdr to avoid
proprietary code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/532a589e017bb6edefe60fc2ea402f541eb237ed.1694792595.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib.h

@@ -679,17 +679,6 @@ struct rtllib_pspoll_hdr {
 	u8 ta[ETH_ALEN];
 } __packed;
 
-struct rtllib_hdr_4addr {
-	__le16 frame_ctl;
-	__le16 duration_id;
-	u8 addr1[ETH_ALEN];
-	u8 addr2[ETH_ALEN];
-	u8 addr3[ETH_ALEN];
-	__le16 seq_ctl;
-	u8 addr4[ETH_ALEN];
-	u8 payload[];
-} __packed;
-
 struct rtllib_hdr_3addrqos {
 	__le16 frame_ctl;
 	__le16 duration_id;