Patch merged into coreboot/master: 55cb84b bg4cd: define custom romstage entry

the following patch was just integrated into master:
commit 55cb84b244732dc93a096aadb2d324a1a05801db
Author: Daisuke Nojiri 
Date:   Mon Dec 29 16:04:23 2014 -0800

bg4cd: define custom romstage entry

this change defines a custom romstage entry for bg4cd. the entry code
    stalls subcores, sets up the stack, and clears the bss before jumping to main.

BUG=none
    BRANCH=tot
    TEST=built all current boards. booted cosmos p1

Change-Id: Idde43f94555bec7804a16928c58ce673956a39e5
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 7a35e12eb29b351cc0baaea24344f00d2ba905f6
    Original-Change-Id: I9172e873a43847f3ea82cd1d9fd0841f0db83994
    Original-Signed-off-by: Daisuke Nojiri 
    Original-Reviewed-on: https://chromium-review.googlesource.com/238022
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: http://review.coreboot.org/9722
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/9722 for details.

-gerrit