soc/intel/broadwell: Move romstage.c to Haswell

Broadwell no longer has CPU code.

Change-Id: I9c9717439a702dddaa613a30e6f3da29887ec4bd
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46951
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/intel/haswell/Makefile.inc

@@ -1,4 +1,6 @@
 ramstage-y += haswell_init.c
+
+romstage-y += romstage.c
 romstage-y += ../car/romstage.c
 
 ramstage-y += acpi.c

src/soc/intel/broadwell/Makefile.inc

@@ -1,7 +1,5 @@
 ifeq ($(CONFIG_SOC_INTEL_BROADWELL),y)
 
-romstage-y += cpu/romstage.c
-
 subdirs-y += pch
 
 bootblock-y += bootblock.c