MMCONF_SUPPORT: Flip default to enabled

Also remove separate MMCONF_SUPPORT_DEFAULT flag.

Change-Id: Idf1accdb93843a8fe2ee9c09fb984968652476e0
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17694
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/northbridge/intel/e7505/Kconfig b/src/northbridge/intel/e7505/Kconfig
index c1faac0..702ba1c 100644
--- a/src/northbridge/intel/e7505/Kconfig
+++ b/src/northbridge/intel/e7505/Kconfig
@@ -20,6 +20,7 @@
 
 config NORTHBRIDGE_SPECIFIC_OPTIONS # dummy
 	def_bool y
+	select NO_MMCONF_SUPPORT
 	select HAVE_DEBUG_RAM_SETUP
 	select LATE_CBMEM_INIT