Patch merged into coreboot/master: soc/intel/broadwell/lpc.c: don't zeroize existing gnvs table

the following patch was just integrated into master:
commit a1df15efc82a0ec03bd7353f5f51a2f288c01685
Author: Matt DeVillier 
Date:   Fri Jan 8 17:22:09 2016 -0800

soc/intel/broadwell/lpc.c: don't zeroize existing gnvs table

The gnvs table only needs to be zeroized after init;
    zeroizing an existing/populated table renders all I2C devices
    completely non-functional.

TEST: boot Linux and observe all I2C devices functional

Change-Id: Id149ad645dfe5ed999a65d10e786e17585abc477
    Signed-off-by: Matt DeVillier 
    Reviewed-on: https://review.coreboot.org/17828
    Tested-by: build bot (Jenkins)
    Reviewed-by: Nico Huber

See https://review.coreboot.org/17828 for details.

-gerrit