Update unbind ftdi script, using variables

scripts/unbind_ftdi_udev.sh

 #!/bin/sh
 
-echo "Add udev rule so 0403:6001 devices do not load ftdi_sio driver"
+VENDOR=${1:-0403}
+PRODUCT=${2:-6001}
+FILE=${3:-99-ftdi.rules}
 
-LINE1='ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", MODE:="0666"'
-LINE2=$'ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", RUN+="/bin/sh -c \'echo $kernel > /sys/bus/usb/drivers/ftdi_sio/unbind\'"'
-FILE=/etc/udev/rules.d/99-ftdi.rules
+echo "Add udev rule so ${VENDOR}:${PRODUCT} devices do not load ftdi_sio driver"
+
+LINE0="#The following 2 lines make ${VENDOR}:${PRODUCT} devices not load ftdi_sio driver"
+LINE1="ATTRS{idVendor}==\"${VENDOR}\", ATTRS{idProduct}==\"${PRODUCT}\", MODE:=\"0666\""
+LINE2=$"ATTRS{idVendor}==\"${VENDOR}\", ATTRS{idProduct}==\"${PRODUCT}\", RUN+=\"/bin/sh -c 'echo \$kernel > /sys/bus/usb/drivers/ftdi_sio/unbind'\""
+FILE=/etc/udev/rules.d/$FILE
 
 sudo touch $FILE
+grep -qF -- "$LINE0" "$FILE" || echo "$LINE0" | sudo tee -a "$FILE" > /dev/null
 grep -qF -- "$LINE1" "$FILE" || echo "$LINE1" | sudo tee -a "$FILE" > /dev/null
 grep -qF -- "$LINE2" "$FILE" || echo "$LINE2" | sudo tee -a "$FILE" > /dev/null