child drivers such as interrupt and gpio controllers.
- Add a function to probe SDRAM size at boot time.
- Add a function to configure the Clock Manager's CKEN settings.
- Add an INTC driver.
- Add a GPIO driver.
- Add attach glue for the PXA2x0's "almost" 16550-compatible uarts.
- Tweak the LCD driver to use the GPIO driver's services for setting
up GPIO pin function.