BeagleBoard: Added LED driver

Added LED driver using status_led.  USR0 is set to monitor the boot
status.  USR1 is set to be the green LED.

Included adding configuration and command to the default configuration.

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
4 files changed