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)
1 file changed