IB/hfi1: Send 'reboot' as planned down remote reason

On host shutdown, driver sends 'SMA_Disabled' as a reason
for link down. This is incorrect.

Send 'reboot' as a linkdown reason.
Signed-off-by: NJan Sokolowski <jan.sokolowski@intel.com>
Reviewed-by: NJakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/chip.c

@@ -9786,9 +9786,9 @@ void hfi1_quiet_serdes(struct hfi1_pportdata *ppd)
 	cancel_delayed_work_sync(&ppd->start_link_work);
 
 	ppd->offline_disabled_reason =
-			HFI1_ODR_MASK(OPA_LINKDOWN_REASON_SMA_DISABLED);
-	set_link_down_reason(ppd, OPA_LINKDOWN_REASON_SMA_DISABLED, 0,
-			     OPA_LINKDOWN_REASON_SMA_DISABLED);
+			HFI1_ODR_MASK(OPA_LINKDOWN_REASON_REBOOT);
+	set_link_down_reason(ppd, OPA_LINKDOWN_REASON_REBOOT, 0,
+			     OPA_LINKDOWN_REASON_REBOOT);
 	set_link_state(ppd, HLS_DN_OFFLINE);
 
 	/* disable the port */