TWL4030 Add initial support

The TWL4030 supplies many peripherals for OMAP3 boards. These include
power management, usb and, keyboard.

The product description is found here:

http://focus.ti.com/docs/prod/folders/print/tps65950.html

Product reference document, tps65950.pdf, is found here:

http://www.ti.com/lit/gpn/tps65950



Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Heiko Schocher <hs@denx.de>