netfilter: conntrack: tell compiler to not inline nf_ct_resolve_clash

mainline inclusion
from mainline-v5.5-rc3
commit c7c17e6a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I63OS1


CVE: NA

--------------------------------

At this time compiler inlines it, but this code will not be executed
under normal conditions.

Also, no inlining allows to use "nf_ct_resolve_clash%return" perf probe.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sun Shouxin <sunshouxin@chinatelecom.cn>
Signed-off-by: Xibo.Wang <wangxb12@chinatelecom.cn>
Signed-off-by: Lu Wei <luwei32@huawei.com>