add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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What:        /config/usb-gadget/gadget/functions/tcm.name
Date:        Dec 2015
KernelVersion:    4.5
Description:
        There are no attributes because all the configuration
        is performed in the "target" subsystem of configfs.