Added HID protocol (bios/normal mode)

src/SingleReport/BootKeyboard.cpp

@@ -101,6 +101,10 @@ uint8_t BootKeyboard_::getLeds(void){
     return leds;
 }
 
+uint8_t BootKeyboard_::getProtocol(void){
+    return protocol;
+}
+
 void BootKeyboard_::sendReport(void* data, int length){
 	USB_Send(pluggedEndpoint | TRANSFER_RELEASE, data, length);
 }

src/SingleReport/BootKeyboard.h

@@ -35,6 +35,7 @@ class BootKeyboard_ : public PUSBListNode, public KeyboardAPI
 public:
     BootKeyboard_(void);
     uint8_t getLeds(void);
+    uint8_t getProtocol(void);
 
 protected:
     // Implementation of the PUSBListNode

src/SingleReport/HID-Driver.h

@@ -37,6 +37,10 @@ THE SOFTWARE.
 #define HID_REPORT_DESCRIPTOR_TYPE      0x22
 #define HID_PHYSICAL_DESCRIPTOR_TYPE    0x23
 
+// Keyboard/Mouse protocols (normal or bios) HID1.11 Page 8 4.2 Subclass
+#define HID_PROTOCOL_NO_SUBCLASS	0
+#define HID_PROTOCOL_BOOT			1
+
 typedef struct
 {
   uint8_t len;      // 9