libertas: Use netdev_<level> or dev_<level> where possible

Using the more descriptive logging styles gives a bit
more information about the device being operated on.

Makes the object trivially smaller too.

$ size drivers/net/wireless/libertas/built-in.o.*
 187730	   2973	  38488	 229191	  37f47	drivers/net/wireless/libertas/built-in.o.new
 188195	   2973	  38488	 229656	  38118	drivers/net/wireless/libertas/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 0bd79c5..23250f6 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -1,5 +1,3 @@
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
 #include <linux/dcache.h>
 #include <linux/debugfs.h>
 #include <linux/delay.h>
@@ -153,13 +151,14 @@
 		ret = lbs_set_host_sleep(priv, 0);
 	else if (host_sleep == 1) {
 		if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
-			pr_info("wake parameters not configured\n");
+			netdev_info(priv->dev,
+				    "wake parameters not configured\n");
 			ret = -EINVAL;
 			goto out_unlock;
 		}
 		ret = lbs_set_host_sleep(priv, 1);
 	} else {
-		pr_err("invalid option\n");
+		netdev_err(priv->dev, "invalid option\n");
 		ret = -EINVAL;
 	}