Patch merged into coreboot/master: Kconfig: Remove obsolete Kconfig symbols from google/intel boards

the following patch was just integrated into master:
commit 8346aca83a88f31781f190c1988d90a05b31425b
Author: Martin Roth 
Date:   Wed Nov 4 11:52:41 2015 -0700

Kconfig: Remove obsolete Kconfig symbols from google/intel boards

- CACHE_ROM is no longer used in the coreboot code.  It was removed in
    commit 4337020b (Remove CACHE_ROM.)
    - CAR_MIGRATION is also no longer used in coreboot code - it was removed
    in commit cbf5bdfe (CBMEM: Always select CAR_MIGRATION)
    -  MARK_GRAPHICS_MEM_WRCOMB was removed in
    commit 30fe6120 (MTRR: Mark all prefetchable resources as WRCOMB)

Change-Id: I8b33a08c256f6b022e57e9af60d0629d9a3ffac8
    Signed-off-by: Martin Roth 
    Reviewed-on: http://review.coreboot.org/12327
    Tested-by: build bot (Jenkins)
    Reviewed-by: Kyösti Mälkki 
    Reviewed-by: Nico Huber

See http://review.coreboot.org/12327 for details.

-gerrit