separate core and cluster build script
opp: De-obscurify OPP structs and disclose find_device_opp

Move definitions of OPP structs in the header file so that its
members are public and the struct is no longer obscure.

Define interface for find_device_opp in the header file.

Conflicts:

	include/linux/opp.h
Revert "Added-Internal-and-Memory-frequency-voltage-control"

This reverts commit c74acdd35ae59466b05bc929f32f2a9d85a1403e.
devfreq: Add Exynos 5420 MIF voltage control TNX Andreilux for this
devfreq: Add Exynos 5420 INT voltage control TNX Andreilux for this
kernel V0.14B