[coreboot-gerrit] Patch merged into coreboot/master: Makefile: Update payload clean targets

the following patch was just integrated into master:
commit 679755778bdffe2c384eaa390132f3e5cab96a76
Author: Martin Roth 
Date:   Mon Mar 7 16:38:52 2016 -0700

Makefile: Update payload clean targets

Move payload clean targets into payloads/Makefile.inc
    Add clean targets for coreinfo, nvramcui, Memtest86+

Change-Id: I70c13582311dfba3e309805053159f8a039cb109
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/13940
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ben Gardner 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/13940 for details.

-gerrit