Fallback to search for any trackpad device

Refer issue #230. Not sure if this commit helps for that issue but may
as well use a device with trackpad in it's name if we did not find any
other better device candidate.

Author: bulletmark

libinput-gestures

@@ -124,10 +124,14 @@ def get_device_info(name, cmd_list_devices, device_list):
     for d in devices:
         if 'size' in d and 'pointer' in d.get('capabilities'):
             return d
-# Otherwise look for 1st device with touchpad in it's name
+    # Otherwise look for 1st device with touchpad in it's name
     for d in devices:
         if re.search(r'touch ?pad', d.get('device', ''), re.I):
             return d
+    # Otherwise look for 1st device with trackpad in it's name
+    for d in devices:
+        if re.search(r'track ?pad', d.get('device', ''), re.I):
+            return d
 
     # Give up
     return None