msm_cpu_freq_limit: initial coding for controlling MSM quadcore cpus

this module will allow proper max frequency control across all msm cores
intelli_plug: intelligent hotplug cpu driver with eco mode
intelli_plug: multiple patch update

through 04/01/2014
https://github.com/faux123/Nexus_5/commits/kk_mr1/arch/arm/mach-msm/intelli_plug.c
defconfig: enable intelli_plug
ARM: dts: msm: Remove dual configuration for CPU on msm8974

Remove the dual configuration for CPU master on msm8974. The original
intent of this feature was to overcome some bus limitations in certain
usecases. However new desgin impovements have made this feature
requirement
obsolete.