feat(usb/host): Add option to choose peripheral for USB host library

Starting with ESP32-P4 we can have targets that have more than 1 USB-OTG peripheral.
This commit adds an option to choose which peripherals will be used by USB Host lib.

Internally, we will still have only 1 Root HUB but with multiple Root ports.

components/usb/private_include/hub.h

@@ -60,6 +60,7 @@ typedef void (*hub_event_cb_t)(hub_event_data_t *event_data, void *arg);
  * @brief Hub driver configuration
  */
 typedef struct {
+    unsigned port_map;                              /**< Bitmap of root ports to enable */
     usb_proc_req_cb_t proc_req_cb;                  /**< Processing request callback */
     void *proc_req_cb_arg;                          /**< Processing request callback argument */
     hub_event_cb_t event_cb;                        /**< Hub event callback */