pull in missing relocation macros, see post-extract

Index: src/util/elf2efi.c
--- src/util/elf2efi.c.orig
+++ src/util/elf2efi.c
@@ -32,6 +32,7 @@
 #include <sys/mman.h>
 #include <fcntl.h>
 #include <elf.h>
+#include "elf_common.h"
 #include <libgen.h>
 
 #define EFI_HOSTONLY
