Patch merged into coreboot/master: nvidia/tegra210: lp0_resume: clear the MC_INTSTATUS if MC_INTMASK was 0

the following patch was just integrated into master:
commit a28e9084bf58dc4094a3383b2887a50b9756f2e1
Author: Joseph Lo 
Date:   Wed Oct 28 15:34:22 2015 +0800

nvidia/tegra210: lp0_resume: clear the MC_INTSTATUS if MC_INTMASK was 0

The MC/SMMU should be resumed by the kernel. And the unexpected value
    in the MC_INTSTATUS should be cleared before that. Or it will cause
    some noisy MC interrupt once we enable the IRQ in the kernel.

BUG=chrome-os-partner:46796
    BRANCH=none
    TEST=LP0 suspend/resume test and the EMEM decode/arbitration errors
         should not be observed on resume.

Change-Id: I5b32fa58ebcb8e7db6ffc88e13cca050753f621a
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 07cb719caf40b59c5519fcf212c2fb50f006812e
    Original-Change-Id: I4d34905c04effd54d0d0edf8809e192283db2ca3
    Original-Signed-off-by: Joseph Lo 
    Original-Reviewed-on: https://chromium-review.googlesource.com/309248
    Original-Reviewed-by: Tom Warren 
    Original-Reviewed-by: Andrew Bresticker 
    Original-Commit-Queue: Joseph Lo 
    Original-Tested-by: Joseph Lo 
    Original-(cherry picked from commit 13cbcaf441bd762af9cf00eff24eb7709db38d95)
    Original-Signed-off-by: Joseph Lo 
    Original-Reviewed-on: https://chromium-review.googlesource.com/309497
    Original-Commit-Ready: Andrew Bresticker 
    Reviewed-on: http://review.coreboot.org/12321
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/12321 for details.

-gerrit