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

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

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

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: NChen Zhongjin <chenzhongjin@huawei.com>
Reviewed-by: NXu Kuohai <xukuohai@huawei.com>
(cherry picked from commit 78380898)

arch/x86/kernel/unwind_orc.c

@@ -77,9 +77,9 @@ static struct orc_entry *orc_module_find(unsigned long ip)
 }
 #endif
 
-#ifdef CONFIG_DYNAMIC_FTRACE
 static struct orc_entry *orc_find(unsigned long ip);
 
+#ifdef CONFIG_DYNAMIC_FTRACE
 /*
  * Ftrace dynamic trampolines do not have orc entries of their own.
  * But they are copies of the ftrace entries that are static and