Merge "PM / devfreq: Fix cpu-to-dev-map documentation for devfreq_cpufreq"

Parent device name shall be "devfreq-cpufreq".

Required child device properties:

- cpu-to-dev-map:	A list of tuples where each tuple consists of a

- cpu-to-dev-map, or cpu-to-dev-map-<X>:

			A list of tuples where each tuple consists of a

			CPU frequency (KHz) and the corresponding device

			frequency. CPU frequencies not listed in the table

			will use the device frequency that corresponds to the

			next rounded up CPU frequency.

			Use "cpu-to-dev-map" if all CPUs in the system should

			share same mapping.

			Use cpu-to-dev-map-<cpuid> to describe different

			mappings for different CPUs. The property should be

			listed only for the first CPU if multiple CPUs are

			synchronous.

- target-dev:		Phandle to device that this mapping applies to.

Example: