Add bcdDevice info to help teensy_ports identify models

teensy3/usb_desc.c

 #ifdef BCD_DEVICE
 	LSB(BCD_DEVICE), MSB(BCD_DEVICE),       // bcdDevice
 #else
+  // For USB types that don't explicitly define BCD_DEVICE,
+  // use the minor version number to help teensy_ports
+  // identify which Teensy model is used.
+  #if defined(__MKL26Z64__)
+        0x73, 0x02,
+  #elif defined(__MK20DX128__)
+        0x74, 0x02,
+  #elif defined(__MK20DX256__)
+        0x75, 0x02,
+  #elif defined(__MK64FX512__)
+        0x76, 0x02,
+  #elif defined(__MK66FX1M0__)
+        0x77, 0x02,
+  #else
         0x00, 0x02,
+  #endif
 #endif
         1,                                      // iManufacturer
         2,                                      // iProduct

usb_hid/usb.c

 	ENDPOINT0_SIZE,				// bMaxPacketSize0
 	LSB(VENDOR_ID), MSB(VENDOR_ID),		// idVendor
 	LSB(PRODUCT_ID), MSB(PRODUCT_ID),	// idProduct
+#if defined(__AVR_ATmega32U4__)
+	0x71, 0x02,
+#elif defined(__AVR_AT90USB1286__)
+	0x72, 0x02,
+#else
 	0x05, 0x01,				// bcdDevice
+#endif
 	0,					// iManufacturer
 	1,					// iProduct
 	0,					// iSerialNumber

usb_midi/usb.c

 	ENDPOINT0_SIZE,				// bMaxPacketSize0
 	LSB(VENDOR_ID), MSB(VENDOR_ID),		// idVendor
 	LSB(PRODUCT_ID), MSB(PRODUCT_ID),	// idProduct
+#if defined(__AVR_ATmega32U4__)
+	0x71, 0x02,
+#elif defined(__AVR_AT90USB1286__)
+	0x72, 0x02,
+#else
 	0x00, 0x01,				// bcdDevice
+#endif
 	0,					// iManufacturer
 	1,					// iProduct
 	0,					// iSerialNumber

usb_serial/usb.c

 	ENDPOINT0_SIZE,				// bMaxPacketSize0
 	LSB(VENDOR_ID), MSB(VENDOR_ID),		// idVendor
 	LSB(PRODUCT_ID), MSB(PRODUCT_ID),	// idProduct
+#if defined(__AVR_ATmega32U4__)
+	0x71, 0x02,
+#elif defined(__AVR_AT90USB1286__)
+	0x72, 0x02,
+#else
 	0x00, 0x01,				// bcdDevice
+#endif
 	1,					// iManufacturer
 	2,					// iProduct
 	3,					// iSerialNumber

usb_serial_hid/usb.c

 	ENDPOINT0_SIZE,				// bMaxPacketSize0
 	LSB(VENDOR_ID), MSB(VENDOR_ID),		// idVendor
 	LSB(PRODUCT_ID), MSB(PRODUCT_ID),	// idProduct
+#if defined(__AVR_ATmega32U4__)
+	0x71, 0x02,
+#elif defined(__AVR_AT90USB1286__)
+	0x72, 0x02,
+#else
 	0x02, 0x01,				// bcdDevice
+#endif
 	1,					// iManufacturer
 	2,					// iProduct
 	3,					// iSerialNumber