intel/fsp_rangeley: Switch to MMCONF_SUPPORT_DEFAULT

Boards with this chipset do not have any reference of
MMCONF_BASE_ADDRESS being written to chipset registers.
Either board support is already broken or FSP takes
care of this early and Kconfig lacks the notice that
this parameter must match with the chosen FSP binary.

CPU bootblock associated with this chipset uses
exclusive PCI IO access already.

Untested.

Change-Id: I07d20d81266ff6aaa6384d20a806d52fd4568e08
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17547
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/northbridge/intel/fsp_rangeley/Kconfig

@@ -17,7 +17,7 @@
 config NORTHBRIDGE_INTEL_FSP_RANGELEY
 	bool
 	select CPU_INTEL_FSP_MODEL_406DX
-	select MMCONF_SUPPORT
+	select MMCONF_SUPPORT_DEFAULT
 
 if NORTHBRIDGE_INTEL_FSP_RANGELEY