board: Enable ARCH_ARM_HAVE_NEON

For handle NEON architecture optimizations
ril: Add custom RIL class
prop: Force dithering

Fixes some weird issues with transparency when scrolling up and down status bar
prop: Disable strict mode

Stric mode is enabled by default on non-user builds, and forces to make flashes$
Disable it until we fix the original issue.
overlay: Delete Mms config

This seems to have the same values by default
init: Get ta_load service back