battery: add shell=True to lsmod call

systemd needs shell=True otherwise it returns "FileNotFoundError: [Errno 2] No such file or directory: 'lsmod'"

auto_cpufreq/battery_scripts/battery.py

@@ -8,7 +8,7 @@
 
 def lsmod(module):
     output = subprocess.run(
-        ['lsmod'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+        ['lsmod'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, shell=True)
     if module in output.stdout:
         return True
     else: