cpu/intel/model_206ax: Switch to POSTCAR_STAGE

Tested on Lenovo Thinkpad X220 with both native raminit and mrc.bin.

Change-Id: I5e1a1175d79af4dc079a5a08a464eef08de0bcbf
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/26791
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
index fce1a49..f727453 100644
--- a/src/northbridge/intel/sandybridge/Kconfig
+++ b/src/northbridge/intel/sandybridge/Kconfig
@@ -21,6 +21,8 @@
 	select HAVE_DEBUG_RAM_SETUP
 	select INTEL_GMA_ACPI
 	select RELOCATABLE_RAMSTAGE
+	select POSTCAR_STAGE
+	select POSTCAR_CONSOLE
 
 config NORTHBRIDGE_INTEL_IVYBRIDGE
 	bool
@@ -29,6 +31,8 @@
 	select HAVE_DEBUG_RAM_SETUP
 	select INTEL_GMA_ACPI
 	select RELOCATABLE_RAMSTAGE
+	select POSTCAR_STAGE
+	select POSTCAR_CONSOLE
 
 if NORTHBRIDGE_INTEL_IVYBRIDGE || NORTHBRIDGE_INTEL_SANDYBRIDGE