Enable GRAPHITE and build with memory optimizations. Add Cortex A-15 Flags
This will allow the kernel to use the cortex A-15 for MSM Krait CPU's.
This flags will enable graphite to be built onto the kernel and also allow it to build with memory optimizations.
This only applies to kernels.

For ROM check https://github.com/AOSPAL

Big thanks to @sparksco Paul Beeler <sparksco@gmail.com>