Patch merged into coreboot/master: cbfs: define libpayload_init_default_cbfs_media weakly

the following patch was just integrated into master:
commit 9150e5e0f26a1f2908d8ab95c2f82e3ccad423dc
Author: Daisuke Nojiri 
Date:   Wed Jul 1 10:31:49 2015 -0700

cbfs: define libpayload_init_default_cbfs_media weakly

To allow a payload to define its own libpayload_init_default_cbfs_media,
    default implementation needs to be defined weakly.

BUG=none
    BRANCH=tot
    TEST=dumped a cbfs file from depthcharge cli on jerry

Change-Id: Ice73ae5a63dfd49e79c0eeb92d4eade016d61c39
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 1f308177fffb0d525fdb50f8d024568bb9025352
    Original-Change-Id: I4721139aea3169c62c10a2a26582bd9277e4cb83
    Original-Signed-off-by: Daisuke Nojiri 
    Original-Reviewed-on: https://chromium-review.googlesource.com/283061
    Original-Reviewed-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/10783
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/10783 for details.

-gerrit