Patch merged into coreboot/master: vbnv: Do not initialize vbnv_copy in vbnv layer

the following patch was just integrated into master:
commit be87f73c68a81b48aec0d651a8bde52aa37f3690
Author: Furquan Shaikh 
Date:   Wed Jun 29 11:26:27 2016 -0700

vbnv: Do not initialize vbnv_copy in vbnv layer

If read_vbnv finds that the vbnv_copy is not valid, it initializes it
    with the correct HEADER_SIGNATURE and other attributes. However, the
    vbnv copy is checked for validity and initialized at the vboot layer as
    well. Since, vboot is the owner of this data, it should be the one
    initializing it. Thus, if read_vbnv sees that the data is not valid,
    simply reset it to all 0s and let vboot layer take care of it. This also
    removes the need for additional checks to ensure that the dirty vbnv
    copy is properly updated on storage.

Change-Id: I6101ac41f31f720a6e357c9c56e571d62e0f2f47
    Signed-off-by: Furquan Shaikh 
    Reviewed-on: https://review.coreboot.org/15498
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Julius Werner

See https://review.coreboot.org/15498 for details.

-gerrit