PM branch updated

Hello,

This is mainly a rebase to current linux-omap master branch which is based at v2.6.31-rc6, no functional changes.

Since a few changesets and several patches previously carried the PM branch have now been merged upstream, these have been dropped from the PM branch.

For more details on the PM branch, see the eLinux.org wiki where I keep up-to-date status and instructions for using:

http://elinux.org/OMAP_Power_Management

Kevin