staging: r8188eu: ra and ta do not depend on to_ds, from_ds

The "DS bit usage" table in include/linux/ieee80211.h shows that
ra is always addr1 and ta is always addr2.

We can set pattrib->ra and pattrib->ta regardless of the to_ds and
from_ds bits.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220403165438.357728-9-martin@kaiser.cx


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