cpufreq / ondemand: update frequency when limits are relaxed

Reevaluate CPU load and update frequency immediately whenever limits
are changed. Currently ondemand doesn't do that when limits are
relaxed, wasting power on systems with relatively low sampling rate.

Signed-off-by: Michal Pecio <mpecio@nvidia.com>
Reviewed-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
usb: remove ehci_pm wakelock

This removes the ehci_pm wakelock completely, its
somehow experimental since its not known which side
effects this will have.
Modem seems to work just like before, however
it may cause connection issues. Feedback is
highly appreciated.

Also do some random cleanups in the host-driver.

Signed-off-by: Blechd0se <alex.christ@hotmail.de>