overall_stats: forward port to kernel 3.4+

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

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: 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>
Add /dev/frandom support

Signed-off-by: flar2 <asegaert@gmail.com>
intellidemand: Selectively update parts to 5.5

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
Add gboost and update config

Signed-off-by: flar2 <asegaert@gmail.com>
enabled ZRAM in defconfig

Change-Id: Id846142406c31659519f2c28aeea3d392d6ab27a