NFC: Initial Secure Element API

Each NFC adapter can have several links to different secure elements and
that property needs to be exported by the drivers.
A secure element link can be enabled and disabled, and card emulation will
be handled by the currently active one. Otherwise card emulation will be
host implemented.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/pn533.c

@@ -2525,6 +2525,7 @@ static int pn533_probe(struct usb_interface *interface,
 
 
 	dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
+					   NFC_SE_NONE,
 					   dev->ops->tx_header_len +
 					   PN533_CMD_DATAEXCH_HEAD_LEN,
 					   dev->ops->tx_tail_len);