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 <martinroth@google.com>
Reviewed-on: http://review.coreboot.org/12327
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions