nb/intel/haswell: Use system_reset()

Use already defined system_reset() function.

Change-Id: I436f62c4402736fb74c59d8b359d0b3963f0e659
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32494
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/northbridge/intel/haswell/raminit.c b/src/northbridge/intel/haswell/raminit.c
index faaa9d0..fddada4 100644
--- a/src/northbridge/intel/haswell/raminit.c
+++ b/src/northbridge/intel/haswell/raminit.c
@@ -19,6 +19,7 @@
 #include <cbmem.h>
 #include <arch/cbfs.h>
 #include <cbfs.h>
+#include <cf9_reset.h>
 #include <halt.h>
 #include <ip_checksum.h>
 #include <memory_info.h>
@@ -136,8 +137,7 @@
 		post_code(POST_RESUME_FAILURE);
 		printk(BIOS_DEBUG, "Giving up in sdram_initialize: "
 		       "No MRC data\n");
-		outb(0x6, 0xcf9);
-		halt();
+		system_reset();
 	}
 
 	/* Pass console handler in pei_data */