udev: use the udev rules directly to set attr

We don't need complicated script for this, we can just set required
attributes using udev rules.

udev/80-modem-eg25.rules

@@ -1 +1,5 @@
-ACTION=="add", SUBSYSTEM=="tty", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", ENV{MINOR}=="0", RUN+="/usr/bin/eg25-configure-usb %p"
+ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", ATTR{power/control}="auto"
+ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", ATTR{power/autosuspend_delay_ms}="3000"
+ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", ATTR{power/wakeup}="enabled"
+ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", ATTR{avoid_reset_quirk}="1"
+ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", ATTRS{idVendor}=="2c7c", ATTRS{idProduct}=="0125", ATTR{power/persist}="0"

udev/eg25-configure-usb

@@ -1,21 +0,0 @@
-#!/bin/sh
-
-DEVPATH=/sys/$1
-USB_ID=
-
-[ -d ${DEVPATH} ] || exit 1
-
-while [ ! "${USB_ID}" ]; do
-    if [ -f ${DEVPATH}/avoid_reset_quirk ]; then
-        USB_ID=$(basename ${DEVPATH})
-        break
-    fi
-    DEVPATH=$(dirname ${DEVPATH})
-done
-
-# Avoid USB resets
-echo "auto" > /sys/bus/usb/devices/${USB_ID}/power/control
-echo "3000" > /sys/bus/usb/devices/${USB_ID}/power/autosuspend_delay_ms
-echo "enabled" > /sys/bus/usb/devices/${USB_ID}/power/wakeup
-echo "1" > /sys/bus/usb/devices/${USB_ID}/avoid_reset_quirk
-echo "0" > /sys/bus/usb/devices/${USB_ID}/power/persist

udev/meson.build

@@ -4,5 +4,4 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-install_data ('eg25-configure-usb', install_dir: bindir)
 install_data ('80-modem-eg25.rules', install_dir: udevrulesdir)