Merge sandy/ivybridge romstage flow for MRC and non-MRC.

Change-Id: I11e09804ed1d8a7ae8b8d4502bd18f6be933f9fa
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: https://review.coreboot.org/13656
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>

util/autoport/bd82x6x.go

@@ -362,6 +362,10 @@ void mainboard_early_init(int s3resume)
 {
 }
 
+void mainboard_config_superio(void)
+{
+}
+
 /* FIXME: Put proper SPD map here. */
 void mainboard_get_spd(spd_raw_data *spd)
 {