ftrace: Rename variable from old_hash_ops to old_ops_hash

The variable name "old_hash_ops" is confusing because it is a hash
and not an ops. It is of type "struct ftrace_ops_hash" and should
be called old_ops_hash.

Link: http://lkml.kernel.org/r/54B79D98.6070800@hitachi.com

Suggested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
1 file changed