drivers/base/core.c: output device renaming messages with dev_dbg().

Replace pr_debug() with dev_dbg().

Signed-off-by: ethan.zhao <ethan.kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/base/core.c b/drivers/base/core.c
index bf35c55..67b180d 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1816,8 +1816,7 @@
 	if (!dev)
 		return -EINVAL;
 
-	pr_debug("device: '%s': %s: renaming to '%s'\n", dev_name(dev),
-		 __func__, new_name);
+	dev_dbg(dev, "renaming to %s\n", new_name);
 
 	old_device_name = kstrdup(dev_name(dev), GFP_KERNEL);
 	if (!old_device_name) {