intel/nehalem: Use non-powercycle reset.

Change-Id: Ibc2421a50e272a580461e4eacec6cfcd38654fe8
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/5266
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)

src/northbridge/intel/nehalem/raminit.c

@@ -3804,7 +3804,7 @@ void chipset_init(const int s3resume)
 	if ((x2ca8 & 1) || (x2ca8 == 8 && !s3resume)) {
 		printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
 		write_mchbar8(0x2ca8, 0);
-		outb(0xe, 0xcf9);
+		outb(0x6, 0xcf9);
 #if REAL
 		while (1) {
 			asm volatile ("hlt");