Andrew Turner 88cb7e2852 Add the structures needed to get/set the power state. These can be used
when, for example, we boot without U-Boot and wish to enable USB, or to
suspend an unneeded device.

MFC after:	1 week
2015-02-15 11:23:27 +00:00
..
2014-05-14 11:15:48 +00:00