haswell/lynxpoint: Add native DMI init

Implement native DMI init for Haswell and Lynx Point. This is only
needed on non-ULT platforms, and only when MRC.bin is not used.

TEST=Verify DMI initialises correctly on Asrock B85M Pro4.

Change-Id: I5fb1a2adc4ffbf0ebbf0d2d3a444055c53765faa
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64177
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
index 08dd6dd..49f03f1 100644
--- a/src/southbridge/intel/lynxpoint/Makefile.inc
+++ b/src/southbridge/intel/lynxpoint/Makefile.inc
@@ -35,6 +35,8 @@
 romstage-y += early_usb.c early_me.c me_status.c early_pch.c
 romstage-y += pmutil.c
 
+romstage-$(CONFIG_USE_NATIVE_RAMINIT) += early_pch_native.c
+
 ifeq ($(CONFIG_INTEL_LYNXPOINT_LP),y)
 romstage-y += lp_gpio.c
 ramstage-y += lp_gpio.c