Patch merged into coreboot/master: 5e8286b program loading: add optional is_loader_active() callback

the following patch was just integrated into master:
commit 5e8286bed6f18cd2a85b029911f97da21b38394d
Author: Aaron Durbin 
Date:   Tue Apr 28 15:59:12 2015 -0500

program loading: add optional is_loader_active() callback

Add a way for a loader to indicate if it is active. Such users
    of this callback would be vboot which can indicate to the rest
    of the system that it isn't active. is_loader_active() also
    gives vboot a chance to perform the necessary work to make
    said decision.

Change-Id: I6679ac75b19bb1bfff9c2b709da5591986f752ff
    Signed-off-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/10022
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/10022 for details.

-gerrit