HID: hyperv: pr_err() strings should end with newlines

pr_err() messages should terminated with a new-line to avoid
other messages being concatenated onto the end.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-hyperv.c

@@ -313,7 +313,7 @@ static void mousevsc_on_receive(struct hv_device *device,
 
 		break;
 	default:
-		pr_err("unsupported hid msg type - type %d len %d",
+		pr_err("unsupported hid msg type - type %d len %d\n",
 		       hid_msg->header.type, hid_msg->header.size);
 		break;
 	}