New i2clcd PCF8754 i2c lcd interface module driver

[Nathanial Sloss <nat%netbsd.org@localhost>]

Hi,

I have written a driver for an inexpensive and readily available i2c interface 
module attached to an Hitachi compatible lcd display.

Similar attachments are found for cobalt/lcd and arm/tslcd.

The display is configurable at runtime via sysctl variables.  It defaults to 
16x2 characters.

Please see:

http://ftp.netbsd.org/pub/NetBSD/misc/nat/i2clcd-new.diff

I would like to include this in src within two weeks unless there is any 
objection.

These displays and i2c interfaces make a great addition to any 
Raspberry/Orange/Bananna Pi.

Best regards,

Nat