add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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APX4DEVKIT BOARD
M:    Lauri Hintsala <lauri.hintsala@bluegiga.com>
S:    Maintained
F:    board/bluegiga/apx4devkit/
F:    include/configs/apx4devkit.h
F:    configs/apx4devkit_defconfig