leds: Fix wrong dmi_match on PC Engines APU LEDs

BIOS on APU board doesn't expose board_name property, and thus
we have to rely on the product_name instead.
Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

drivers/leds/leds-apu.c

@@ -223,7 +223,7 @@ static int __init apu_led_probe(struct platform_device *pdev)
 
 	apu_led->pdev = pdev;
 
-	if (dmi_match(DMI_BOARD_NAME, "APU")) {
+	if (dmi_match(DMI_PRODUCT_NAME, "APU")) {
 		apu_led->profile = apu1_led_profile;
 		apu_led->platform = APU1_LED_PLATFORM;
 		apu_led->num_led_instances = ARRAY_SIZE(apu1_led_profile);