superio/winbond/w83627dhg: Convert romstage to generic component

Convert the serial init to the generic romstage component and
corresponding boards using this sio.

Change-Id: I36bcf38c4351130be1ed924ecfe606336d0433f3
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5588
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/mainboard/asrock/939a785gmh/romstage.c b/src/mainboard/asrock/939a785gmh/romstage.c
index edc5830..ce0a6ac 100644
--- a/src/mainboard/asrock/939a785gmh/romstage.c
+++ b/src/mainboard/asrock/939a785gmh/romstage.c
@@ -37,7 +37,8 @@
 #include <spd.h>
 #include "cpu/x86/lapic.h"
 #include "northbridge/amd/amdk8/reset_test.c"
-#include "superio/winbond/w83627dhg/w83627dhg.h"
+#include <superio/winbond/common/winbond.h>
+#include <superio/winbond/w83627dhg/w83627dhg.h>
 #include "cpu/x86/bist.h"
 #include "northbridge/amd/amdk8/setup_resource_map.c"
 #include "southbridge/amd/rs780/early_setup.c"
@@ -153,7 +154,7 @@
 	sb7xx_51xx_lpc_init();
 
 	sio_init();
-	w83627dhg_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
 
 	console_init();