video: Renname vbe.h to vesa.h

We want to use VBE to mean Verfiied Boot for Embedded in U-Boot. Rename
the existing VBE (Vesa BIOS extensions) to allow this.

Verified Boot for Embedded is documented doc/develop/vbe.rst

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/elf.c b/lib/elf.c
index d074e4e..0476b26 100644
--- a/lib/elf.c
+++ b/lib/elf.c
@@ -11,7 +11,7 @@
 #include <net.h>
 #include <vxworks.h>
 #ifdef CONFIG_X86
-#include <vbe.h>
+#include <vesa.h>
 #include <asm/e820.h>
 #include <linux/linkage.h>
 #endif