CBMEM: Tag chipsets with LATE_CBMEM_INIT

In preparation to remove the static CBMEM allocator, tag the chipsets
that still do not implement get_top_of_ram() for romstage.

LATE_CBMEM_INIT also implies BROKEN_CAR_MIGRATE.

Change-Id: Iad359db2e65ac15c54ff6e9635429628e4db6fde
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7850
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)

src/northbridge/amd/amdfam10/Kconfig

@@ -25,6 +25,7 @@ config NORTHBRIDGE_AMD_AMDFAM10
 	select HYPERTRANSPORT_PLUGIN_SUPPORT
 	select MMCONF_SUPPORT
 	select PER_DEVICE_ACPI_TABLES
+	select LATE_CBMEM_INIT
 
 if NORTHBRIDGE_AMD_AMDFAM10
 config AGP_APERTURE_SIZE