[coreboot-gerrit] Patch merged into coreboot/master: aec2442 broadwell: add RCBA posting read after writing

the following patch was just integrated into master:
commit aec2442f3cd6c9bdbf998be710e8af056e8d33c4
Author: Wenkai Du 
Date:   Wed Oct 15 11:19:16 2014 -0700

broadwell: add RCBA posting read after writing

MEI PCI device has internal logic to flush out the posted writes
    before returning completion for non-posted request. When doing a RCBA
    write to function disable and then using the PCI CFG RD cycle, need
    to do RCBA posting read after writing to it to make sure the write
    went through.

As Aaron sugegsted, abstracted function disable path to a common
    function.

BUG=chrome-os-partner:33048
    TEST=run warm and cold reboot testing

Change-Id: I40d374f1712a9137b3b1eac6bbf2d71078840406
    Signed-off-by: Stefan Reinauer 
    Original-Commit-Id: f10b368e01aae1fc5dda63f7ac0641dd2636c949
    Original-Change-Id: I87aa8ccd604446263fc3621c9a01839a5a75b644
    Original-Signed-off-by: Wenkai Du 
    Original-Reviewed-on: https://chromium-review.googlesource.com/223715
    Original-Reviewed-by: Aaron Durbin 
    Original-Reviewed-by: Duncan Laurie 
    Reviewed-on: http://review.coreboot.org/9462
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/9462 for details.

-gerrit