Added NFC driver for Goldfish emulator

The kernel driver forwards messages between NFC user-space driver
and emulated device.

Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>
Merge remote-tracking branch 'tdz/bug-916863' into b2g/b2g-goldfish-2.6.29

Bug 916863 - [NFC] NFC support in emulator