northbridge/intel/pineview: Add remaining boilerplate code for northbridge

This patch does *not* include native raminit

Change-Id: I3fb8146ef7fe2ad27c167ecd2fb0fd629f051cc1
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/12430
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)

src/northbridge/intel/pineview/Makefile.inc

@@ -17,8 +17,10 @@
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_PINEVIEW),y)
 
 ramstage-y += ram_calc.c
+ramstage-y += northbridge.c
 ramstage-y += acpi.c
 
 romstage-y += ram_calc.c
+romstage-y += early_init.c
 
 endif