soc/intel/broadwell: Move ramstage.c to PCH scope

The remaining code in this file is PCH-specific.

Change-Id: I0e4924e680db9c25aeb222bdd478b3282a77b34f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49946
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/broadwell/Makefile.inc

@@ -19,7 +19,6 @@ ramstage-y += minihd.c
 ramstage-y += northbridge.c
 ramstage-y += pei_data.c
 romstage-y += pei_data.c
-ramstage-y += ramstage.c
 ramstage-$(CONFIG_HAVE_REFCODE_BLOB) += refcode.c
 
 CPPFLAGS_common += -Isrc/soc/intel/broadwell/include

src/soc/intel/broadwell/pch/Makefile.inc

@@ -24,6 +24,7 @@ romstage-y += pmutil.c
 smm-y      += pmutil.c
 verstage-y += pmutil.c
 romstage-y += power_state.c
+ramstage-y += ramstage.c
 ramstage-y += sata.c
 ramstage-y += serialio.c
 ramstage-y += smbus.c