z1211: Make the LEDs warning debug-only

This warning triggers now and then with an -ETIMEDOUT error. Though the LEDs work fine.
Make this warning debug-only, as nobody is really interested in a LED failure that happens only now and then.
If the LEDs don't work, one can easily enable debugging to see what's going on.
This reduces dmesg spamming.

Signed-off-by Michael Buesch <[email protected]>

Index: wireless-2.6/drivers/net/wireless/z1211/zd_mac.c
===================================================================

drivers/net/wireless/z1211/zd_mac.c +1 -1

@@ -922,7 +922,7 @@ static void link_led_handler(struct work
 	r = zd_chip_control_leds(chip,
 		                 is_associated ? LED_ASSOCIATED : LED_SCANNING);
 	if (r)
-		dev_err(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r);
+		dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r);
 
 	queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
 		           LINK_LED_WORK_DELAY);