drivers/graphics/framebuffer: fix include guard

Pointed out by LGTM (Duplicate include guard).

Change-Id: Idc0e0cd48f85d4635f87355f36eb03932aa36d2e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4736
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>

src/add-ons/kernel/drivers/graphics/framebuffer/framebuffer_private.h

@@ -3,8 +3,8 @@
  * Copyright 2016, Jessica Hamilton, [email protected].
  * Distributed under the terms of the MIT License.
  */
-#ifndef VESA_PRIVATE_H
-#define VESA_PRIVATE_H
+#ifndef FRAMEBUFFER_PRIVATE_H
+#define FRAMEBUFFER_PRIVATE_H
 
 
 #include <Drivers.h>
@@ -32,4 +32,4 @@ struct framebuffer_info {
 extern status_t framebuffer_init(framebuffer_info& info);
 extern void framebuffer_uninit(framebuffer_info& info);
 
-#endif	/* VESA_PRIVATE_H */
+#endif	/* FRAMEBUFFER_PRIVATE_H */