sb/intel/lynxpoint: Enable LPC/SIO setup in bootblock

This allows for serial console during the bootblock and enables
console in general for the bootblock.

Change-Id: I5c6e107c267a7acb5bf9cbeb54eb5361af3b6db4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30315
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc
index fd00f6c..04e0bc9 100644
--- a/src/southbridge/intel/lynxpoint/Makefile.inc
+++ b/src/southbridge/intel/lynxpoint/Makefile.inc
@@ -46,6 +46,7 @@
 smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c me_9.x.c pch.c
 smm-$(CONFIG_HAVE_SMI_HANDLER) += pmutil.c usb_ehci.c usb_xhci.c
 
+bootblock-y += early_pch.c
 romstage-y += early_usb.c early_smbus.c early_me.c me_status.c early_pch.c
 romstage-y += early_spi.c rcba.c pmutil.c