arch/x86/bootblock: Do not include non-code files in bootblock.S

Since we now have more freedom in the bootblock linking step it no
longer makes sense to use a monolithic bootblock.S. Code segments must
still be included as the order in bootblock.S determines code flow.
However, non-code flow related assembly stubs don't need to be directly
included in bootblock.S

Change-Id: I08e86e92d82bd2138194ed42652f268b0764aa54
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/11792
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/cpu/intel/Makefile.inc b/src/cpu/intel/Makefile.inc
index 6f07e30..904aa5d 100644
--- a/src/cpu/intel/Makefile.inc
+++ b/src/cpu/intel/Makefile.inc
@@ -3,6 +3,7 @@
 #
 # Therefore: ONLY include Makefile.inc from socket directories!
 
+subdirs-$(CONFIG_CPU_INTEL_FIRMWARE_INTERFACE_TABLE) += fit
 subdirs-$(CONFIG_CPU_INTEL_SOCKET_441) += socket_441
 subdirs-$(CONFIG_CPU_INTEL_SOCKET_BGA956) += socket_BGA956
 subdirs-$(CONFIG_CPU_INTEL_EP80579) += ep80579