Bug 985415: Fix console output for NFC notification commands
Bug 985415: Fix console output for NFC notification commands

This patch adds well-formed error messages to the notification
commands of NFC. Each message is prefixed by 'KO', which signals
an error to the emulator.

Signed-off-by: Thomas Zimmermann <9db2882e8bd65115896ebac31a8fb3c23a33f58a@users.sourceforge.net>

mozilla-b2g/libnfcemu,mozilla-b2g/libnfcemu,tdz/platform_external_libnfcemu,tdz/platform_external_libnfcemu