[coreboot] Patch merged into coreboot/master: 87b3cab Makefile: define build result directories

the following patch was just integrated into master:
commit 87b3cab7f6ef4b8845de540c40b643c41ff3fdef
Author: Kyösti Mälkki 
Date:   Thu Apr 19 12:00:06 2012 +0300

Makefile: define build result directories

Final build results (.elf, .debug, .map) are to be placed under
    directory $(objcbfs), the default is:
       $(obj)/cbfs/$(CONFIG_CBFS_PREFIX)/

Intermediate build results (.o, .s, .S, .inc, .ld) that do not have
    a clear one-to-one relation to a file under src/ are to be placed
    under directory $(objgenerated), the default is:
       $(obj)/generated

Also defines implicit rules for final build results:

.debug -> .elf and .map
      .elf -> .bin

Change-Id: I448c6b7c9a952e54170df42091d7db438025a795
    Signed-off-by: Kyösti Mälkki

Reviewed-By: Patrick Georgi  at Sat Apr 21 09:41:27 2012, giving +2
See http://review.coreboot.org/858 for details.

-gerrit