修改源碼編譯ADB模式

引：主要是爲了一部分系統在編譯完成之後，方便使用，所以將模式固定成經常使用的模式。

PATH：/android/device/fsl/imx8q/mek_8q
修改文件： init.usb.rc

on boot
    mount configfs none /config
    mkdir /config/usb_gadget/g1 0770 shell shell
    mkdir /config/usb_gadget/g1/strings/0x409 0770 shell shell
    write /config/usb_gadget/g1/bcdUSB 0x0200
    write /config/usb_gadget/g1/idVendor 0x18d1
    write /config/usb_gadget/g1/bcdDevice 0x0440
    write /config/usb_gadget/g1/strings/0x409/serialnumber ${ro.serialno}
    write /config/usb_gadget/g1/strings/0x409/manufacturer ${ro.product.manufacturer}
    write /config/usb_gadget/g1/strings/0x409/product ${ro.product.model}

    mkdir /config/usb_gadget/g1/functions/ffs.adb
    mkdir /config/usb_gadget/g1/functions/ffs.mtp
    mkdir /config/usb_gadget/g1/functions/accessory.gs2
    mkdir /config/usb_gadget/g1/functions/audio_source.gs3
    mkdir /config/usb_gadget/g1/functions/rndis.gs4
    mkdir /config/usb_gadget/g1/functions/midi.gs5
    mkdir /config/usb_gadget/g1/configs/b.1 0770 shell shell
    mkdir /config/usb_gadget/g1/configs/b.1/strings/0x409 0770 shell shell
    # The mount of functionfs for adb must be put AFTER the mkdir for functions in configfs
    write /config/usb_gadget/g1/os_desc/b_vendor_code 0x1
    write /config/usb_gadget/g1/os_desc/qw_sign "MSFT100"
    mkdir /dev/usb-ffs 0775 shell shell
    mkdir /dev/usb-ffs/adb 0770 shell shell
    mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
    mkdir /dev/usb-ffs/mtp 0770 mtp mtp
    mount functionfs mtp /dev/usb-ffs/mtp rmode=0770,fmode=0660,uid=1024,gid=1024,no_disconnect=1
    # gadget-cdns3 is the TYPE-C UDC name on mek_8q
    setprop sys.usb.configfs 1
    setprop sys.usb.controller ci_hdrc.0
symlink /config/usb_gadget/g1/configs/b.1 /config/usb_gadget/g1/os_desc/b.1
 ~~~~~~~~~~~~將下列這行修改成 2~~~~~~~~~~~~~~~~~~
    write /sys/bus/platform/devices/ci_hdrc.0/role host
 ~~~~~~~~~~~~對我就是2，要修改我~~~~~~~~~~~~~~~~~~
    write /sys/bus/platform/devices/ci_hdrc.0/role gadget
~~~~~~~~~~~~~~~~~~~~~~~~END~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
on property:sys.usb.config=none && property:sys.usb.configfs=1
    write /config/usb_gadget/g1/os_desc/use 0

on property:sys.usb.config=mtp && property:sys.usb.configfs=1
    write /config/usb_gadget/g1/idVendor 0x18d1
    write /config/usb_gadget/g1/idProduct 0x4ee1
    write /config/usb_gadget/g1/os_desc/use 1