[SCSI] mpt2sas: Removed compiler warnnings when logging is disabled

The compiler throws warning messages while compiling without
CONFIG_SCSI_MPT2SAS_LOGGING.
Set proper ifdef for CONFIG_SCSI_MPT2SAS_LOGGING to avoid warnnings.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
index 40cb8ae..e92b77a 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
@@ -81,6 +81,7 @@
 	BLOCKING,
 };
 
+#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 /**
  * _ctl_sas_device_find_by_handle - sas device search
  * @ioc: per adapter object
@@ -107,7 +108,6 @@
 	return r;
 }
 
-#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 /**
  * _ctl_display_some_debug - debug routine
  * @ioc: per adapter object