feat(core/otg): add otg framework

Signed-off-by: sakumisu <1203593632@qq.com>

core/usbotg_core.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBOTG_CORE_H
+#define USBOTG_CORE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define USBOTG_MODE_UNKNOWN 0
+#define USBOTG_MODE_OTG     1
+#define USBOTG_MODE_HOST    2
+#define USBOTG_MODE_DEVICE  3
+
+#include "usbd_core.h"
+#include "usbh_core.h"
+#include "usb_otg.h"
+
+int usbotg_initialize(uint8_t otg_mode, uint8_t busid, uint32_t reg_base,
+                      int (*usbh_initialize)(uint8_t busid, uint32_t reg_base),
+                      int (*usbd_initialize)(uint8_t busid, uint32_t reg_base));
+int usbotg_deinitialize(uint8_t busid, uint32_t reg_base);
+
+/* called by user */
+void usbotg_trigger_role_change(uint8_t busid);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBOTG_CORE_H */