wl1271: modify wl1271_acx_ac_cfg() to use function parameters

For WMM we need to configure each queue separately so modify
wl1271_acx_ac_cfg() to take the configuration from function parameters
instead.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>