util/intelmetool: Add intelmetool from Damien Zammit

The intelmetool shows information about the Intel
Management Engine for different platforms.

Original source code can be found under following link:
https://github.com/zamaudio/intelmetool.git

Change-Id: I0eb17833a21eb04cf9245a7312289a4102bec1a9
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/14136
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

util/intelmetool/mmap.h

@@ -0,0 +1,27 @@
+/* intelmetool
+ *
+ * Copyright (C) 2013-2015 Damien Zammit <damien@zamaudio.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <stdio.h>
+
+#ifndef __DARWIN__
+extern int fd_mem;
+extern void *map_physical(uint64_t phys_addr, size_t len);
+extern void unmap_physical(void *virt_addr, size_t len);
+extern void *map_physical_exact(uint64_t phys_addr, uint64_t mapto, size_t len);
+#endif