add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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ex-y += ex.o
ex-y += a.o
ex-y += b.o
ex-y += b.o
ex-y += empty/
ex-y += empty2/
ex-y += inc.o
 
libex-y += c.o
libex-y += d.o
libex-y += arch/