NFC: Add a nop (passthrough) llc module to llc core

This is a passthrough llc. It can be used by HCI drivers that don't
need link layer control. HCI will then write directly to the driver, and
driver will deliver incoming frames directly to HCI without any
processing.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/net/nfc/llc.h b/include/net/nfc/llc.h
index 98df903..146e053 100644
--- a/include/net/nfc/llc.h
+++ b/include/net/nfc/llc.h
@@ -24,6 +24,8 @@
 #include <net/nfc/hci.h>
 #include <linux/skbuff.h>
 
+#define LLC_NOP_NAME "nop"
+
 typedef void (*rcv_to_hci_t) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
 typedef int (*xmit_to_drv_t) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
 typedef void (*llc_failure_t) (struct nfc_hci_dev *hdev, int err);