ChibiOS: fix deadlocks when hammering mouse/extra keys

When hammering on the mouse or extra keys, tmk will deadlock.
To fix that, i've copied the fix from the keyboard endpoint [1]

[1] tmk/tmk_keyboard@72c52d3

protocol/chibios/usb_main.c

@@ -1189,14 +1189,15 @@ void send_mouse(report_mouse_t *report) {
     osalSysUnlock();
     return;
   }
-  osalSysUnlock();
 
   /* TODO: LUFA manually waits for the endpoint to become ready
    * for about 10ms for mouse, kbd, system; 1ms for nkro
    * is this really needed?
    */
 
-  osalSysLock();
+  if(usbGetTransmitStatusI(&USB_DRIVER, MOUSE_ENDPOINT)) {
+    osalThreadSuspendS(&(&USB_DRIVER)->epc[MOUSE_ENDPOINT]->in_state->thread);
+  }
   usbStartTransmitI(&USB_DRIVER, MOUSE_ENDPOINT, (uint8_t *)report, sizeof(report_mouse_t));
   osalSysUnlock();
 }
@@ -1233,6 +1234,9 @@ static void send_extra_report(uint8_t report_id, uint16_t data) {
     .usage = data
   };
 
+  if(usbGetTransmitStatusI(&USB_DRIVER, EXTRA_ENDPOINT)) {
+    osalThreadSuspendS(&(&USB_DRIVER)->epc[EXTRA_ENDPOINT]->in_state->thread);
+  }
   usbStartTransmitI(&USB_DRIVER, EXTRA_ENDPOINT, (uint8_t *)&report, sizeof(report_extra_t));
   osalSysUnlock();
 }