omap: Adding beagle i2c eeprom driver to read EDID

Adding i2c eeprom driver to access monitor EDID binary information
from user space, something that is required by 'decode-edid' and
'parse-edid'.

BugLink: https://bugs.launchpad.net/bugs/608279



Signed-off-by: Mathieu Poirier <mathieu.poirier@canonical.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>