nb/intel/i945: Initialize console in bootblock

Change-Id: Ic6ea158714998195614a63ee46a057f405de5616
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36796
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/mainboard/asus/p5gc-mx/Makefile.inc

@@ -1,2 +1,4 @@
 ramstage-y += cstates.c
 romstage-y += gpio.c
+bootblock-y += early_init.c
+romstage-y += early_init.c

src/mainboard/asus/p5gc-mx/early_init.c

@@ -15,6 +15,7 @@
  * GNU General Public License for more details.
  */
 
+#include <bootblock_common.h>
 #include <stdint.h>
 #include <cf9_reset.h>
 #include <device/pnp_ops.h>
@@ -111,7 +112,7 @@ void mainboard_pre_raminit_config(int s3_resume)
 	}
 }
 
-void mainboard_superio_config(void)
+void bootblock_mainboard_early_init(void)
 {
 	winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
 }