nb/intel/pineview: Use system_reset()

Use already defined system_reset() function.

Change-Id: I32c731de0c30940d15fd01fec6f10b3b33c04370
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32496
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/northbridge/intel/pineview/romstage.c

@@ -22,6 +22,7 @@
 #include <console/console.h>
 #include <device/pci_ops.h>
 #include <cbmem.h>
+#include <cf9_reset.h>
 #include <halt.h>
 #include <romstage_handoff.h>
 #include <southbridge/intel/i82801gx/i82801gx.h>
@@ -113,8 +114,7 @@ void mainboard_romstage_entry(unsigned long bist)
 
 	if (!cbmem_was_initted && s3resume) {
 		/* Failed S3 resume, reset to come up cleanly */
-		outb(0x6, 0xcf9);
-		halt();
+		system_reset();
 	}
 
 	romstage_handoff_init(s3resume);