soc/intel/quark: Add FSP 2.0 boot block support

Add the pieces necessary to successfully build and run bootblock using
the FSP 2.0 build.

TEST=Build and run bootblock on Galileo Gen2

Change-Id: I2377f0b0147196f100396b8cd7eaca8f92d6932f
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15865
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/intel/galileo/Makefile.inc b/src/mainboard/intel/galileo/Makefile.inc
index 5aad308..efaf007 100644
--- a/src/mainboard/intel/galileo/Makefile.inc
+++ b/src/mainboard/intel/galileo/Makefile.inc
@@ -23,5 +23,8 @@
 romstage-y += gpio.c
 romstage-y += reg_access.c
 
+postcar-y += gpio.c
+postcar-y += reg_access.c
+
 ramstage-y += gpio.c
 ramstage-y += reg_access.c