staging: lustre: Move proc_*() functions inside #ifdef CONFIG_SYSCTL

If CONFIG_SYSCTL=n:

    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:84: warning: ‘proc_set_timeout’ defined but not used
    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:95: warning: ‘proc_memory_alloc’ defined but not used
    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:119: warning: ‘proc_pages_alloc’ defined but not used
    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:143: warning: ‘proc_mem_max’ defined but not used
    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:167: warning: ‘proc_pages_max’ defined but not used
    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:191: warning: ‘proc_max_dirty_pages_in_mb’ defined but not used
    drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:232: warning: ‘proc_alloc_fail_rate’ defined but not used

Make the existing #ifdef CONFIG_SYSCTL cover all sysctl-related
functions to fix this.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c

@@ -79,6 +79,7 @@ enum {
 };
 
 
+#ifdef CONFIG_SYSCTL
 static int proc_set_timeout(struct ctl_table *table, int write,
 			void __user *buffer, size_t *lenp, loff_t *ppos)
 {
@@ -258,7 +259,6 @@ static int proc_alloc_fail_rate(struct ctl_table *table, int write,
 	return rc;
 }
 
-#ifdef CONFIG_SYSCTL
 static struct ctl_table obd_table[] = {
 	{
 		.procname = "timeout",