add tud_hid_descriptor_report_cb()

- remove tud_desc_set.hid_report
- remove tud_desc_set_t

src/class/hid/hid_device.c

@@ -201,7 +201,8 @@ bool hidd_control_request(uint8_t rhport, tusb_control_request_t const * p_reque
 
     if (p_request->bRequest == TUSB_REQ_GET_DESCRIPTOR && desc_type == HID_DESC_TYPE_REPORT)
     {
-      usbd_control_xfer(rhport, p_request, (void*) tud_desc_set.hid_report, p_hid->reprot_desc_len);
+      uint8_t const * desc_report = tud_hid_descriptor_report_cb();
+      usbd_control_xfer(rhport, p_request, (void*) desc_report, p_hid->reprot_desc_len);
     }else
     {
       return false; // stall unsupported request

src/class/hid/hid_device.h

@@ -68,6 +68,11 @@ bool tud_hid_mouse_report(uint8_t report_id, uint8_t buttons, int8_t x, int8_t y
 // Callbacks (Weak is optional)
 //--------------------------------------------------------------------+
 
+// Invoked when received GET HID REPORT DESCRIPTOR
+// Application return pointer to descriptor
+// Descriptor contents must exist long enough for transfer to complete
+uint8_t const * tud_hid_descriptor_report_cb(void);
+
 // Invoked when received GET_REPORT control request
 // Application must fill buffer report's content and return its length.
 // Return zero will cause the stack to STALL request