arch/x86/bootblock_normal: Fix failure to build

Fix a function call in the normal path using the original function
name and arguments in code that was changed in commit 3bfd7cc6
(drivers/pc80: Rework normal / fallback selector code)

This commit reworked most of the fallback / normal code,
however the normal code paths were not fully tested by Jenkins,
so this was missed.

Change-Id: Ied66334977272a13b7a7307ff4d9f34eb22040aa
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/12315
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)

src/arch/x86/bootblock_normal.c

@@ -27,7 +27,7 @@ static void main(unsigned long bist)
 		 * Do not add any other CMOS access in the
 		 * bootblock for AP CPUs.
 		 */
-		boot_mode = last_boot_normal();
+		boot_mode = boot_use_normal(cmos_read(RTC_BOOT_BYTE));
 	}
 
 	char *filenames = (char *)walkcbfs("coreboot-stages");