add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/arc/Kconfig
..
..
@@ -507,7 +507,6 @@
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 config HIGHMEM
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 	bool "High Memory Support"
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 	select ARCH_DISCONTIGMEM_ENABLE
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-	select KMAP_LOCAL
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 	help
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 	  With ARC 2G:2G address split, only upper 2G is directly addressable by
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 	  kernel. Enable this to potentially allow access to rest of 2G and PAE