x86/unwind: Fix check_paravirt() calls orc_find() before declaration

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6DK3O


CVE: NA

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check_paravirt() calls orc_find() before its implementation code.

If CONFIG_DYNAMIC_FTRACE is enabled, orc_find() will be declared
earlier and compiling will not fail. Otherwise it will fail for
"implicit declaration of function 'orc_find'".

Move declaration of orc_find() out of CONFIG_DYNAMIC_FTRACE macro to
fix this.

Fixes: cbb12ea4718a ("[Huawei] x86/unwind: Fix orc entry for paravirt {save,restore}_fl")
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
Reviewed-by: Xu Kuohai <xukuohai@huawei.com>