Adds support for Planck Rev 6 (#2666)

* initial files for rev 6 with encoder

* music map init, dip scan added

* adds ws2812 driver for arm

* flesh out dip and encoder support

* adds default encoder res

* adds default encoder res

* start muse implementation

* muse working with encoder as control

* flip direction

* try mouse wheel again

* dont break other revs

* dont break other revs

* conditional autio

* pwm ws driver (not working)

* update build includes for chibios

* update ws2812 driver/config

* last commit for glasser code

* working example

* remove rgb for now

* finish up rev6

* working encoder keycodes

* add warnings to planck keymaps about the LAYOUT

tmk_core/protocol/chibios/usb_main.c

@@ -717,12 +717,14 @@ void send_mouse(report_mouse_t *report) {
   }
   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_IN_EPNUM)) {
+    /* Need to either suspend, or loop and call unlock/lock during
+     * every iteration - otherwise the system will remain locked,
+     * no interrupts served, so USB not going through as well.
+     * Note: for suspend, need USB_USE_WAIT == TRUE in halconf.h */
+    osalThreadSuspendS(&(&USB_DRIVER)->epc[MOUSE_IN_EPNUM]->in_state->thread);
+  }
   usbStartTransmitI(&USB_DRIVER, MOUSE_IN_EPNUM, (uint8_t *)report, sizeof(report_mouse_t));
   osalSysUnlock();
 }