emulation/qemu-i440fx: add cmos.default file

Add cmos.default file in order to ease future testing and debugging of
cmos related code.

Change-Id: I7c6a0aa4e38bb08a520e4838fa216c81b50f2917
Signed-off-by: Antonello Dettori <dev@dettori.io>
Reviewed-on: https://review.coreboot.org/16247
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/emulation/qemu-i440fx/Kconfig b/src/mainboard/emulation/qemu-i440fx/Kconfig
index b74ba62..1dba29d 100644
--- a/src/mainboard/emulation/qemu-i440fx/Kconfig
+++ b/src/mainboard/emulation/qemu-i440fx/Kconfig
@@ -5,6 +5,7 @@
 	select CPU_QEMU_X86
 	select SOUTHBRIDGE_INTEL_I82371EB
 	select HAVE_OPTION_TABLE
+	select HAVE_CMOS_DEFAULT
 	select HAVE_PIRQ_TABLE
 	select HAVE_ACPI_TABLES
 	select BOARD_ROMSIZE_KB_256