intel FSP sandy/ivy: Move select MMCONF_SUPPORT

Note: Platforms have no MMCONF_SUPPORT_DEFAULT.

Change-Id: I8a02ea78957fca23b1cf161a00d5e3edda73d683
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17543
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/northbridge/intel/fsp_sandybridge/Kconfig

@@ -18,11 +18,13 @@ config NORTHBRIDGE_INTEL_FSP_SANDYBRIDGE
 	bool
 	select CPU_INTEL_FSP_MODEL_206AX
 	select INTEL_GMA_ACPI
+	select MMCONF_SUPPORT
 
 config NORTHBRIDGE_INTEL_FSP_IVYBRIDGE
 	bool
 	select CPU_INTEL_FSP_MODEL_306AX
 	select INTEL_GMA_ACPI
+	select MMCONF_SUPPORT
 
 if NORTHBRIDGE_INTEL_FSP_IVYBRIDGE || NORTHBRIDGE_INTEL_FSP_SANDYBRIDGE