ec/lenovo/h8: make wlan config a CMOS option

To stay in line with wwan and bluetooth.

Change-Id: Iafe2dc97fc2aec5c2ad1834659b796a6b079c1bc
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4652
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/ec/lenovo/h8/h8.c

@@ -211,7 +211,11 @@ static void h8_enable(device_t dev)
 	ec_write(0x1f, conf->eventf_enable);
 
 	ec_write(H8_FAN_CONTROL, H8_FAN_CONTROL_AUTO);
-	h8_wlan_enable(1);
+
+	if (get_option(&val, "wlan") != CB_SUCCESS)
+		val = 1;
+	h8_wlan_enable(val);
+
 	h8_trackpoint_enable(conf->trackpoint_enable);
 	h8_usb_power_enable(1);