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NFC: 3.20 second pull request This is the second NFC pull request for 3.20. It brings: - NCI NFCEE (NFC Execution Environment, typically an embedded or external secure element) discovery and enabling/disabling support. In order to communicate with an NFCEE, we also added NCI's logical connections support to the NCI stack. - HCI over NCI protocol support. Some secure elements only understand HCI and thus we need to send them HCI frames when they're part of an NCI chipset. - NFC_EVT_TRANSACTION userspace API addition. Whenever an application running on a secure element needs to notify its host counterpart, we send an NFC_EVENT_SE_TRANSACTION event to userspace through the NFC netlink socket. - Secure element and HCI transaction event support for the st21nfcb chipset. Signed-off-by: David S. Miller <davem@davemloft.net>