add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/leds/leds-tca6507.c
..
..
@@ -696,8 +696,9 @@
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 		if (fwnode_property_read_string(child, "label", &led.name))
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 			led.name = fwnode_get_name(child);
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-		fwnode_property_read_string(child, "linux,default-trigger",
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-					    &led.default_trigger);
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+		if (fwnode_property_read_string(child, "linux,default-trigger",
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+						&led.default_trigger))
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+			led.default_trigger = NULL;
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 		led.flags = 0;
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 		if (fwnode_property_match_string(child, "compatible",