x86/alternative: Init ideal_nops for Hygon Dhyana

commit c3fecca4 upstream.

The ideal_nops for Hygon Dhyana CPU should be p6_nops.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: tglx@linutronix.de
Cc: mingo@redhat.com
Cc: hpa@zytor.com
Cc: x86@kernel.org
Cc: thomas.lendacky@amd.com
Link: https://lkml.kernel.org/r/79e76c3173716984fe5fdd4a8e2c798bf4193205.1537533369.git.puwen@hygon.cn


Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>