staging: r8188eu: don't call get_hdr_bssid

staging: r8188eu: don't call get_hdr_bssid

Do not call get_hdr_bssid from validate_recv_data_frame.

We already distinguish between the four cases for to_ds, from_ds. Copy
the bssid address as described in the "DS bit usage" table in
include/linux/ieee80211.h.

Eventually, we should remove get_hdr_bssid (and other similar
driver-specific parsing functions).

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220403165438.357728-11-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>