Updating AVR abstraction to be compatible with ARM, nearly ready for ARM files

- Very small updates to files, mostly modifying to remove name duplications

USB/pjrc/setup.cmake

@@ -29,6 +29,7 @@ elseif ( ${COMPILER_FAMILY} MATCHES "arm" )
 		arm/usb_dev.c
 		arm/usb_keyboard.c
 		arm/usb_mem.c
+		arm/usb_serial.c
 	)
 
 endif ( ${COMPILER_FAMILY} MATCHES "avr" )

USB/pjrc/usb_com.c

@@ -32,6 +32,7 @@
 #include "avr/usb_keyboard_debug.h"
 #elif defined(_mk20dx128_)
 #include "arm/usb_keyboard.h"
+#include "arm/usb_dev.h"
 #endif
 
 // Local Includes

USB/pjrc/usb_com.h

@@ -38,6 +38,7 @@
 
 
 // You can change these to give your code its own name.
+// TODO Add to Teensy 3
 #define STR_MANUFACTURER	L"MfgName"
 #define STR_PRODUCT		L"Keyboard"
 
@@ -47,7 +48,8 @@
 // INF file is needed to load the driver.  These numbers need to
 // match the INF file.
 #define VENDOR_ID		0x16C0
-#define PRODUCT_ID		0x047D
+#define PRODUCT_ID		0x0487 // New ID for Teensy 3
+//#define PRODUCT_ID		0x047D // Old ID for Teensy 2