enic: Use (netdev|dev|pr)_<level> macro helpers for logging

Replace all printk routines with the (netdev|dev|pr)_<level> macros that
provide verbose logs.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/enic/vnic_intr.c b/drivers/net/enic/vnic_intr.c
index 3934309..416eae7 100644
--- a/drivers/net/enic/vnic_intr.c
+++ b/drivers/net/enic/vnic_intr.c
@@ -39,8 +39,7 @@
 
 	intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
 	if (!intr->ctrl) {
-		printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n",
-			index);
+		pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
 		return -EINVAL;
 	}