yama: simplfy sysctls with register_sysctl()

register_sysctl_paths() is only need if you have directories with
entries, simplify this by using register_sysctl().
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

security/yama/yama_lsm.c

@@ -447,12 +447,6 @@ static int yama_dointvec_minmax(struct ctl_table *table, int write,
 
 static int max_scope = YAMA_SCOPE_NO_ATTACH;
 
-static struct ctl_path yama_sysctl_path[] = {
-	{ .procname = "kernel", },
-	{ .procname = "yama", },
-	{ }
-};
-
 static struct ctl_table yama_sysctl_table[] = {
 	{
 		.procname       = "ptrace_scope",
@@ -467,7 +461,7 @@ static struct ctl_table yama_sysctl_table[] = {
 };
 static void __init yama_init_sysctl(void)
 {
-	if (!register_sysctl_paths(yama_sysctl_path, yama_sysctl_table))
+	if (!register_sysctl("kernel/yama", yama_sysctl_table))
 		panic("Yama: sysctl registration failed.\n");
 }
 #else