ipmi: simplify sysctl registration

register_sysctl_table() is a deprecated compatibility wrapper.
register_sysctl() can do the directory creation for you so just use
that.
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Message-Id: <20230302204612.782387-3-mcgrof@kernel.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_poweroff.c

@@ -659,20 +659,6 @@ static struct ctl_table ipmi_table[] = {
 	{ }
 };
 
-static struct ctl_table ipmi_dir_table[] = {
-	{ .procname	= "ipmi",
-	  .mode		= 0555,
-	  .child	= ipmi_table },
-	{ }
-};
-
-static struct ctl_table ipmi_root_table[] = {
-	{ .procname	= "dev",
-	  .mode		= 0555,
-	  .child	= ipmi_dir_table },
-	{ }
-};
-
 static struct ctl_table_header *ipmi_table_header;
 #endif /* CONFIG_PROC_FS */
 
@@ -689,7 +675,7 @@ static int __init ipmi_poweroff_init(void)
 		pr_info("Power cycle is enabled\n");
 
 #ifdef CONFIG_PROC_FS
-	ipmi_table_header = register_sysctl_table(ipmi_root_table);
+	ipmi_table_header = register_sysctl("dev/ipmi", ipmi_table);
 	if (!ipmi_table_header) {
 		pr_err("Unable to register powercycle sysctl\n");
 		rv = -ENOMEM;