Patch merged into coreboot/master: google/reef: Update flash size to 16MiB

the following patch was just integrated into master:
commit 2c4a60da35f5f3334e5a35c3330712f2241ecf58
Author: Furquan Shaikh 
Date:   Tue Jun 14 17:28:51 2016 -0700

google/reef: Update flash size to 16MiB

Use entire 16MiB flash size on reef. Adjust SIGN_CSE region
    accordingly.

BUG=chrome-os-partner:54390

Change-Id: I94de509bdb2aa94625814123bf4d9758bfa37fc9
    Signed-off-by: Furquan Shaikh 
    Reviewed-on: https://review.coreboot.org/15191
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/15191 for details.

-gerrit