vendorcode/eltan: Add vendor code for measured and verified boot

This patch contains the general files for the vendorcode/eltan that has
been uploaded recently:
- Add eltan directory to vendorcode.
- Add documentation about the support in the vendorcode directories.
- Add the Makefile.inc and Kconfig for the vendorcode/eltan and
  vendorcode/eltan/security.

BUG=N/A
TEST=Created verified binary and verify logging on Portwell PQ-M107

Change-Id: Ic1d5a21d40b6a31886777e8e9fe7b28c860f1a80
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30218
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/vendorcode/eltan/Makefile.inc b/src/vendorcode/eltan/Makefile.inc
new file mode 100644
index 0000000000..1f6a4065cf
--- /dev/null
+++ b/src/vendorcode/eltan/Makefile.inc
@@ -0,0 +1,16 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2018 Eltan B.V.
+#
+# 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; version 2 of the License.
+#
+# 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.
+#
+
+subdirs-y += security