OMAP: PM debug: make powerdomains use PM-debug counters

Make the powerdomain code call the new hook for updating the time.
Also implement the updated pwrdm_for_each.

Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>