add gmac0 read mac form eeprom,pcie30x1

hc

2023-11-22 d0a428a6556ea5a006e22e28b0b1cd037885fe20

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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.