Rename timer driver API functions to be consistent. ADD DOCS TO THE
HEADER so implementations understand what the requirements are.
Remove some unused functions that don't need declarations here.
Also removes the per-platform #if's around the power control callback
in favor of a weak-linked noop function in the driver initialization
(adds a few bytes of code to default platforms -- we'll live, I
think).
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
1a1a9539ea