PM / OPP: Move the OPP directory out of power/

The drivers/base/power/ directory is special and contains code related
to power management core like system suspend/resume, hibernation, etc.
It was fine to keep the OPP code inside it when we had just one file for
it, but it is growing now and already has a directory for itself.

Lets move it directly under drivers/ directory, just like cpufreq and
cpuidle.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

kernel/power/Kconfig

@@ -259,20 +259,6 @@ config APM_EMULATION
 	  anything, try disabling/enabling this option (or disabling/enabling
 	  APM in your BIOS).
 
-config PM_OPP
-	bool
-	select SRCU
-	---help---
-	  SOCs have a standard set of tuples consisting of frequency and
-	  voltage pairs that the device will support per voltage domain. This
-	  is called Operating Performance Point or OPP. The actual definitions
-	  of OPP varies over silicon within the same family of devices.
-
-	  OPP layer organizes the data internally using device pointers
-	  representing individual voltage domains and provides SOC
-	  implementations a ready to use framework to manage OPPs.
-	  For more information, read <file:Documentation/power/opp.txt>
-
 config PM_CLK
 	def_bool y
 	depends on PM && HAVE_CLK