mac80211: rt2x00: enable setting wifi led polarity from OF

This patch enables setting the wifi led polarity from OF.
It can be used in a DTS' wmac section like this:

   ralink,led-polarity = <1>;

Valid values are 0 or 1.

Signed-off-by: Felix Kaechele <heffer@fedoraproject.org>

SVN-Revision: 37607

package/kernel/mac80211/patches/619-rt2x00-change-led-polarity-from-OF.patch

@@ -0,0 +1,26 @@
+--- a/drivers/net/wireless/rt2x00/rt2800lib.c
++++ b/drivers/net/wireless/rt2x00/rt2800lib.c
+@@ -5965,6 +5965,13 @@ static int rt2800_init_eeprom(struct rt2
+ 	rt2800_init_led(rt2x00dev, &rt2x00dev->led_assoc, LED_TYPE_ASSOC);
+ 	rt2800_init_led(rt2x00dev, &rt2x00dev->led_qual, LED_TYPE_QUALITY);
+ 
++	/* Allow overriding polarity from OF */
++	struct device_node *np = rt2x00dev->dev->of_node;
++	unsigned int led_polarity;
++
++	if (!of_property_read_u32(np, "ralink,led-polarity", &led_polarity))
++		rt2x00_set_field16(&eeprom, EEPROM_FREQ_LED_POLARITY, led_polarity);
++
+ 	rt2x00dev->led_mcu_reg = eeprom;
+ #endif /* CPTCFG_RT2X00_LIB_LEDS */
+ 
+--- a/drivers/net/wireless/rt2x00/rt2x00leds.c
++++ b/drivers/net/wireless/rt2x00/rt2x00leds.c
+@@ -110,6 +110,7 @@ static int rt2x00leds_register_led(struc
+ 
+ 	led->led_dev.name = name;
+ 	led->led_dev.brightness = LED_OFF;
++	led->led_dev.brightness_set(&led->led_dev, LED_OFF);
+ 
+ 	retval = led_classdev_register(device, &led->led_dev);
+ 	if (retval) {