Make boot keyboard definition available

This caused a problem with virtual builds. The BootKeyboard
header has to be brought in explicitly.

Signed-off-by: Florian Fleissner <florian.fleissner@inpartik.de>

src/kaleidoscope/plugin/USB-Quirks.cpp

@@ -17,6 +17,10 @@
 
 #include <Kaleidoscope-USB-Quirks.h>
 
+#if KALEIDOSCOPE_HIDADAPTOR_ENABLE_KEYBOARD_BOOT_PROTOCOL
+#include "BootKeyboard/BootKeyboard.h"
+#endif
+
 namespace kaleidoscope {
 namespace plugin {