cpufreq: overall_stats: add overall stats for all available cores

this is much more accurate stats tracking than just displaying core 0's
stats from most other kernels

Signed-off-by: faux123 <reioux@gmail.com>

overall_stats: make dual/quad core stats configurable via meunconfig

Signed-off-by: faux123 <reioux@gmail.com>

overall_stats: forward port to kernel 3.4+

by replacing deprecated functions with native add/sub for 64bit data types

Change-Id: I1e17d626bf59b3c0822c9f1088093f848fd2649c
Signed-off-by: faux123 <reioux@gmail.com>
fusion3: config: enable overall stats

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: Ife5143c8079cea6da8cc1b560301b6e26eb6128a

Conflicts:
	arch/arm/configs/cm_fusion3_odin_defconfig
	arch/arm/configs/cm_fusion3_pollux_defconfig
	arch/arm/configs/cm_fusion3_pollux_windy_defconfig
	arch/arm/configs/cm_fusion3_yuga_defconfig
	arch/arm/configs/custom_fusion3_dogo_defconfig