Generic twl4030 power script for 3430 based boards.

This is a generic twl4030 power script for 3430 based boards. It handles
sleep and wakeup events. In case of a sleep event it will first put the
Reset and Control (RC) resources to sleep and then put the voltage regulators
to sleep. In case of a wakeup event, the system clock will be started first,
then the voltage regulators will be woken up and finally the RC resources will
be woken up.

Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>