usb: kbd: move USB_KBD_BOOT_REPORT_SIZE to usb.h

Move constant USB_KBD_BOOT_REPORT_SIZE. This allows us to reuse it.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/usb_kbd.c b/common/usb_kbd.c
index d6b340b..a6221ef 100644
--- a/common/usb_kbd.c
+++ b/common/usb_kbd.c
@@ -95,12 +95,6 @@
 #define USB_KBD_LEDMASK		\
 	(USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
 
-/*
- * USB Keyboard reports are 8 bytes in boot protocol.
- * Appendix B of HID Device Class Definition 1.11
- */
-#define USB_KBD_BOOT_REPORT_SIZE 8
-
 struct usb_kbd_pdata {
 	unsigned long	intpipe;
 	int		intpktsize;
diff --git a/include/usb.h b/include/usb.h
index bcad552..efb67ea 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -242,6 +242,12 @@
 
 #ifdef CONFIG_USB_KEYBOARD
 
+/*
+ * USB Keyboard reports are 8 bytes in boot protocol.
+ * Appendix B of HID Device Class Definition 1.11
+ */
+#define USB_KBD_BOOT_REPORT_SIZE 8
+
 int drv_usb_kbd_init(void);
 int usb_kbd_deregister(int force);