security/vboot: Add measured boot mode

* Introduce a measured boot mode into vboot.
* Add hook for stage measurements in prog_loader and cbfs.
* Implement and hook-up CRTM in vboot and check for suspend.

Change-Id: I339a2f1051e44f36aba9f99828f130592a09355e
Signed-off-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/29547
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/abuild/abuild

@@ -717,7 +717,7 @@ while true ; do
 			chromeos=true
 			testclass=chromeos
 			customizing="${customizing}, chrome os"
-			configoptions="${configoptions}CONFIG_CHROMEOS=y\n"
+			configoptions="${configoptions}CONFIG_CHROMEOS=y\nCONFIG_VBOOT_MEASURED_BOOT=y\n"
 			;;
 		-X|--xmlfile)	shift; XMLFILE=$1; REAL_XMLFILE=$1; shift;;
 		-I|--recursive) shift; recursive=true;;