added dcd_sof_enable() stubs for all other ports

src/portable/nxp/khci/dcd_khci.c

@@ -328,6 +328,14 @@ void dcd_disconnect(uint8_t rhport)
   KHCI->CONTROL &= ~USB_CONTROL_DPPULLUPNONOTG_MASK;
 }
 
+void dcd_sof_enable(uint8_t rhport, bool en)
+{
+  (void) rhport;
+  (void) en;
+
+  // TODO implement later
+}
+
 //--------------------------------------------------------------------+
 // Endpoint API
 //--------------------------------------------------------------------+

src/portable/nxp/lpc17_40/dcd_lpc17_40.c

@@ -228,6 +228,14 @@ void dcd_disconnect(uint8_t rhport)
   sie_write(SIE_CMDCODE_DEVICE_STATUS, 1, 0);
 }
 
+void dcd_sof_enable(uint8_t rhport, bool en)
+{
+  (void) rhport;
+  (void) en;
+
+  // TODO implement later
+}
+
 //--------------------------------------------------------------------+
 // CONTROL HELPER
 //--------------------------------------------------------------------+

src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c

@@ -277,6 +277,14 @@ void dcd_disconnect(uint8_t rhport)
   dcd_reg->DEVCMDSTAT &= ~CMDSTAT_DEVICE_CONNECT_MASK;
 }
 
+void dcd_sof_enable(uint8_t rhport, bool en)
+{
+  (void) rhport;
+  (void) en;
+
+  // TODO implement later
+}
+
 //--------------------------------------------------------------------+
 // DCD Endpoint Port
 //--------------------------------------------------------------------+

src/portable/nxp/transdimension/dcd_transdimension.c

@@ -294,6 +294,14 @@ void dcd_disconnect(uint8_t rhport)
   dcd_reg->USBCMD &= ~USBCMD_RUN_STOP;
 }
 
+void dcd_sof_enable(uint8_t rhport, bool en)
+{
+  (void) rhport;
+  (void) en;
+
+  // TODO implement later
+}
+
 //--------------------------------------------------------------------+
 // HELPER
 //--------------------------------------------------------------------+