wl12xx: Assign value to rx msdu lifetime variable

The patch "wl12xx: cmd and acx interface rework" failed to assign MSDU
lifetime value in wl12xx_acx_rx_msdu_life_time() and breaks the functionality.
This patch fixes the regression by assigning the correct value.

Signed-off-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx/acx.c

@@ -317,6 +317,7 @@ int wl12xx_acx_rx_msdu_life_time(struct wl12xx *wl, u32 life_time)
 		goto out;
 	}
 
+	acx->lifetime = life_time;
 	ret = wl12xx_cmd_configure(wl, DOT11_RX_MSDU_LIFE_TIME,
 				   acx, sizeof(*acx));
 	if (ret < 0) {