Update vusb to match 3rd endpoint.

- With the addition of qmk/v-usb#1 a 3rd endpoint (endpoint4) becomes available.
- We can assign mouse/extrakeys to that endpoint as its a desirable feature and leave rawhid and console to compete for the 2nd endpoint.

NOTE: The version of vusb.c in future branch is older than master. Just remember that it will need a #error if both raw_hid and console are enabled at the same time.

tmk_core/protocol/vusb/usbconfig.h

@@ -85,9 +85,19 @@ section at the end of this file).
 /* If the so-called endpoint 3 is used, it can now be configured to any other
  * endpoint number (except 0) with this macro. Default if undefined is 3.
  */
+#define USB_CFG_HAVE_INTRIN_ENDPOINT4 1
+/* Define this to 1 if you want to compile a version with three endpoints: The
+ * default control endpoint 0, an interrupt-in endpoint 4 (or the number
+ * configured below) and a catch-all default interrupt-in endpoint as above.
+ * You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
+ */
+#define USB_CFG_EP4_NUMBER 4
+/* If the so-called endpoint 4 is used, it can now be configured to any other
+ * endpoint number (except 0) with this macro. Default if undefined is 4.
+ */
 /* #define USB_INITIAL_DATATOKEN           USBPID_DATA1 */
 /* The above macro defines the startup condition for data toggling on the
- * interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
+ * interrupt/bulk endpoints 1, 3 and 4. Defaults to USBPID_DATA1.
  * Since the token is toggled BEFORE sending any data, the first packet is
  * sent with the oposite value of this configuration!
  */
@@ -100,10 +110,10 @@ section at the end of this file).
 #define USB_CFG_SUPPRESS_INTR_CODE      0
 /* Define this to 1 if you want to declare interrupt-in endpoints, but don't
  * want to send any data over them. If this macro is defined to 1, functions
- * usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
- * you need the interrupt-in endpoints in order to comply to an interface
- * (e.g. HID), but never want to send any data. This option saves a couple
- * of bytes in flash memory and the transmit buffers in RAM.
+ * usbSetInterrupt(), usbSetInterrupt3() and usbSetInterrupt4() are omitted.
+ * This is useful if you need the interrupt-in endpoints in order to comply
+ * to an interface (e.g. HID), but never want to send any data. This option
+ * saves a couple of bytes in flash memory and the transmit buffers in RAM.
  */
 #define USB_CFG_IS_SELF_POWERED         0
 /* Define this to 1 if the device has its own power supply. Set it to 0 if the

tmk_core/protocol/vusb/vusb.c

@@ -234,8 +234,8 @@ typedef struct {
 static void send_mouse(report_mouse_t *report) {
 #ifdef MOUSE_ENABLE
     vusb_mouse_report_t r = {.report_id = REPORT_ID_MOUSE, .report = *report};
-    if (usbInterruptIsReady3()) {
-        usbSetInterrupt3((void *)&r, sizeof(vusb_mouse_report_t));
+    if (usbInterruptIsReady4()) {
+        usbSetInterrupt4((void *)&r, sizeof(vusb_mouse_report_t));
     }
 #endif
 }
@@ -249,8 +249,8 @@ static void send_extra(uint8_t report_id, uint16_t data) {
     last_data = data;
 
     report_extra_t report = {.report_id = report_id, .usage = data};
-    if (usbInterruptIsReady3()) {
-        usbSetInterrupt3((void *)&report, sizeof(report));
+    if (usbInterruptIsReady4()) {
+        usbSetInterrupt4((void *)&report, sizeof(report));
     }
 }
 #endif
@@ -732,7 +732,7 @@ const PROGMEM usbConfigurationDescriptor_t usbConfigurationDescriptor = {
             .bLength         = sizeof(usbEndpointDescriptor_t),
             .bDescriptorType = USBDESCR_ENDPOINT
         },
-        .bEndpointAddress    = (USBRQ_DIR_DEVICE_TO_HOST | USB_CFG_EP3_NUMBER),
+        .bEndpointAddress    = (USBRQ_DIR_DEVICE_TO_HOST | USB_CFG_EP4_NUMBER),
         .bmAttributes        = 0x03,
         .wMaxPacketSize      = 8,
         .bInterval           = USB_POLLING_INTERVAL_MS