cinterion: Add support for PLSx3w modems

Signed-off-by: Theodore A. Roth <theodore_roth@trimble.com>

plugins/cinterion/mm-broadband-bearer-cinterion.c

@@ -44,6 +44,7 @@ typedef struct {
  * The expected USB interface mapping is:
  *   INTERFACE=usb0 -> ID_USB_INTERFACE_NUM=0a
  *   INTERFACE=usb1 -> ID_USB_INTERFACE_NUM=0c
+ *   INTERFACE=usb0 -> ID_USB_INTERFACE_NUM=08  (PLSx3w)
  */
 static const UsbInterfaceConfig usb_interface_configs[] = {
     {
@@ -54,6 +55,10 @@ static const UsbInterfaceConfig usb_interface_configs[] = {
         .swwan_index   = 2,
         .usb_iface_num = 0x0c,
     },
+    {
+        .swwan_index   = 1,
+        .usb_iface_num = 0x08,
+    },
 };
 
 static gint