fastboot: Extract common definitions from USB fastboot

Move FASTBOOT_VERSION to include/fastboot.h so when we merge the UDP code
we only have one definition.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c
index 697eee5..25784a1 100644
--- a/drivers/usb/gadget/f_fastboot.c
+++ b/drivers/usb/gadget/f_fastboot.c
@@ -27,8 +27,6 @@
 #include <fb_nand.h>
 #endif
 
-#define FASTBOOT_VERSION		"0.4"
-
 #define FASTBOOT_INTERFACE_CLASS	0xff
 #define FASTBOOT_INTERFACE_SUB_CLASS	0x42
 #define FASTBOOT_INTERFACE_PROTOCOL	0x03
diff --git a/include/fastboot.h b/include/fastboot.h
index 816e71b..bf3d9e2 100644
--- a/include/fastboot.h
+++ b/include/fastboot.h
@@ -12,6 +12,8 @@
 #ifndef _FASTBOOT_H_
 #define _FASTBOOT_H_
 
+#define FASTBOOT_VERSION	"0.4"
+
 /* The 64 defined bytes plus \0 */
 #define FASTBOOT_RESPONSE_LEN	(64 + 1)