usbhost_cdcacm: add CDC_SUBCLASS_ACM and CDC_PROTO_ATM to supported class and proto

drivers/usbhost/usbhost_cdcacm.c

@@ -392,13 +392,22 @@ static bool usbhost_txempty(FAR struct uart_dev_s *uartdev);
  * device.
  */
 
-static const const struct usbhost_id_s g_id =
+static const const struct usbhost_id_s g_id[2] =
 {
-  USB_CLASS_CDC,          /* base     */
-  CDC_SUBCLASS_NONE,      /* subclass */
-  CDC_PROTO_NONE,         /* proto    */
-  0,                      /* vid      */
-  0                       /* pid      */
+  {
+    USB_CLASS_CDC,          /* base     */
+    CDC_SUBCLASS_NONE,      /* subclass */
+    CDC_PROTO_NONE,         /* proto    */
+    0,                      /* vid      */
+    0                       /* pid      */
+  },
+  {
+    USB_CLASS_CDC,          /* base     */
+    CDC_SUBCLASS_ACM,       /* subclass */
+    CDC_PROTO_ATM,          /* proto    */
+    0,                      /* vid      */
+    0                       /* pid      */
+  }
 };
 
 /* This is the USB host CDC/ACM class's registry entry */
@@ -407,8 +416,8 @@ static struct usbhost_registry_s g_cdcacm =
 {
   NULL,                   /* flink    */
   usbhost_create,         /* create   */
-  1,                      /* nids     */
-  &g_id                   /* id[]     */
+  2,                      /* nids     */
+  &g_id[0]                /* id[]     */
 };
 
 /* Serial driver lower half interface */