i2c, omap24xx: convert driver to new mutlibus/mutliadapter framework

i2c, omap24xx: convert driver to new mutlibus/mutliadapter framework

- add omap24xx driver to new multibus/multiadpater support
- adapted all config files, which uses this driver

Tested on the am335x based siemens boards rut, dxr2 and pxm2
posted here:
http://patchwork.ozlabs.org/patch/263211/

Signed-off-by: Heiko Schocher <[email protected]>
Tested-by: Tom Rini <[email protected]>
Cc: Lars Poeschel <[email protected]>
Cc: Steve Sakoman <[email protected]>
Cc: Thomas Weber <[email protected]>
Cc: Tom Rix <[email protected]>
Cc: Grazvydas Ignotas <[email protected]>
Cc: Enric Balletbo i Serra <[email protected]>
Cc: Luca Ceresoli <[email protected]>
Cc: Igor Grinberg <[email protected]>
Cc: Ilya Yanok <[email protected]>
Cc: Stefano Babic <[email protected]>
Cc: Nishanth Menon <[email protected]>
Cc: Pali Rohár <[email protected]>
Cc: Peter Barada <[email protected]>
Cc: Nagendra T S  <[email protected]>
Cc: Michael Jones <[email protected]>
Cc: Raphael Assenat <[email protected]>
Acked-by: Igor Grinberg <[email protected]>
Acked-by: Stefano Babic <[email protected]>