add dcd_edpt_close_all() for clear existing configured state

correctly responded to TD 9.13 Set Configuration Test

src/portable/microchip/samg/dcd_samg.c

@@ -269,6 +269,12 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
   return true;
 }
 
+void dcd_edpt_close_all (uint8_t rhport)
+{
+  (void) rhport;
+  // TODO implement dcd_edpt_close_all()
+}
+
 // Submit a transfer, When complete dcd_event_xfer_complete() is invoked to notify the stack
 bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t total_bytes)
 {