hv: 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>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>

drivers/hv/vmbus_drv.c

@@ -1460,15 +1460,6 @@ static struct ctl_table hv_ctl_table[] = {
 	{}
 };
 
-static struct ctl_table hv_root_table[] = {
-	{
-		.procname	= "kernel",
-		.mode		= 0555,
-		.child		= hv_ctl_table
-	},
-	{}
-};
-
 /*
  * vmbus_bus_init -Main vmbus driver initialization routine.
  *
@@ -1547,7 +1538,7 @@ static int vmbus_bus_init(void)
 		 * message recording won't be available in isolated
 		 * guests should the following registration fail.
 		 */
-		hv_ctl_table_hdr = register_sysctl_table(hv_root_table);
+		hv_ctl_table_hdr = register_sysctl("kernel", hv_ctl_table);
 		if (!hv_ctl_table_hdr)
 			pr_err("Hyper-V: sysctl table register error");