[AVR] Fix USB support for ATmega32U4

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9488 35acf78f-673a-0410-8e92-d51de3d6d3f4

os/hal/ports/AVR/hal_usb_lld.c

@@ -445,7 +445,12 @@ void usb_lld_stop(USBDriver *usbp) {
 #if AVR_USB_USE_USB1 == TRUE
     if (&USBD1 == usbp) {
       /* Disable and clear transition interrupts */
+#if !defined(__AVR_ATmega32U4__)
       USBCON &= ~((1 << VBUSTE) | (1 << IDTE));
+#else
+      USBCON &= ~(1 << VBUSTE);
+#endif
+
       USBINT = 0;
 
       /* Disable and clear device interrupts */
@@ -481,7 +486,10 @@ void usb_lld_reset(USBDriver *usbp) {
 
   /* Set Device mode */
   /* TODO: Support HOST/OTG mode if needed */
+
+#if !defined(__AVR_ATmega32U4__)
   UHWCON |= (1 << UIMOD);
+#endif
 
   /* Set FULL 12mbps speed */
   UDCON &= ~(1 << LSM);