sys.usb.config webcam

setprop persist.sys.usb.config webcam
echo 0 > /sys/devices/virtual/android_usb/android0/enable
echo "webcam" > /sys/class/android_usb/android0/functions
echo 1f30 > /sys/devices/virtual/android_usb/android0/idVendor
echo 1000 > /sys/devices/virtual/android_usb/android0/idProduct
echo 1 > /sys/devices/virtual/android_usb/android0/enable