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.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>