core: handle the 'usb'->'usbmisc' subsystem rename in the kernel

We'll try to cope with getting devices being reported in either 'usb' or
'usbmisc', trying to avoid the need of checking kernel version during runtime.

src/mm-device.c

@@ -140,8 +140,8 @@ get_device_ids (GUdevDevice *device,
                 /* Platform devices don't usually have a VID/PID */
                 success = TRUE;
                 goto out;
-            } else if (!strcmp (parent_subsys, "usb") &&
-                       !strcmp (g_udev_device_get_driver (parent), "qmi_wwan")) {
+            } else if (g_str_has_prefix (parent_subsys, "usb") &&
+                       g_str_equal (g_udev_device_get_driver (parent), "qmi_wwan")) {
                 /* Need to look for vendor/product in the parent of the QMI device */
                 GUdevDevice *qmi_parent;