NFC: basic NCI protocol implementation

The NFC Controller Interface (NCI) is a standard
communication protocol between an NFC Controller (NFCC)
and a Device Host (DH), defined by the NFC Forum.

Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/nfc/Kconfig b/net/nfc/Kconfig
index 33e095b1..58cddad 100644
--- a/net/nfc/Kconfig
+++ b/net/nfc/Kconfig
@@ -13,4 +13,6 @@
 	  To compile this support as a module, choose M here: the module will
 	  be called nfc.
 
+source "net/nfc/nci/Kconfig"
+
 source "drivers/nfc/Kconfig"