fbearlysuspend: sleep for 300ms on screen-off

This hack waits for userspace to draw the screen-off animation.

Change-Id: I32d37f0a23d5c357e8c865206d38034ac4d70a21
pn544: Add ioctl support

Ioctl support is required by userspace to power on the nfc chip.

Change-Id: I7c7b8a363c26bffeea6cbd990ce607913088898c