add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/drivers/net/wireless/ath/ath9k/ar9002_phy.c
..
..
@@ -119,7 +119,7 @@
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 				aModeRefSel = 2;
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 			if (aModeRefSel)
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 				break;
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-			/* else: fall through */
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+			fallthrough;
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 		case 1:
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 		default:
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 			aModeRefSel = 0;