Squash 'enhance power efficiency' patches

Series of patches from NVIDIA on some critical blocking
code paths to allow the CPU to relax instead of busy spinning
thus lowering the load_average and lowering power consumption.

Change-Id: Ic6c933412d2efb669bc5376c97ea9fee96729ff6
Signed-off-by: Sumit Singh <sumsingh@nvidia.com>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Switch Pac Kernel defconfig to Mainline kernel defconfig

Change-Id: I172f0c6feab84ebd08ff44aae1e15c6f7b22a00a
add mainline defconfig to pac kernel and switch

Change-Id: I19d4bc702b3d8c955105901d1b2a8da5ca70c964