The beacon filter table configuration ACX structure had certain elements
reversed, fix it to match TI driver.

Based on wl1271 patch 1937e742 by
Juuso Oikarinen.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>