dma: of: make error message more meaningful by adding the node name

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c
index 75334bd..0b88dd3 100644
--- a/drivers/dma/of-dma.c
+++ b/drivers/dma/of-dma.c
@@ -160,7 +160,8 @@
 
 	count = of_property_count_strings(np, "dma-names");
 	if (count < 0) {
-		pr_err("%s: dma-names property missing or empty\n", __func__);
+		pr_err("%s: dma-names property of node '%s' missing or empty\n",
+			__func__, np->full_name);
 		return NULL;
 	}