enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c
..
..
@@ -134,6 +134,7 @@
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 		    device->chipset == 0xaa ||
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 		    device->chipset == 0xac)
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 			return g84_pll_mapping;
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+		fallthrough;
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 	default:
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 		return NULL;
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 	}