kernel authentication is disabled from Boardconfig

Change-Id: Ie93876cc69660dfea6e4133afd735bfe5e85a60d
Add white list for prescan package so as to save boot time

The config file is added which lists apks for late scanning in order to save boot time.

Change-Id: Ia9d50aa1cd8c818cc03e666d2eda37c0252e1b03
Update mk to remove Wallpapers apks

Removing the wallpapers since they are not required for Auto project.
This is done for optimization.

Change-Id: Ia4efd35d42b7ff947c07d53638f2fbbe9dd36954
Merge "Add white list for prescan package so as to save boot time"
Added flag in System prop

for controlling Auto specific feautures from
centralized place

Change-Id: I5c32e41641229ad9773e781d5d409797c15ff2d7
Add macro to control apps build at compile time

The change is needed  to avoid building of unused apps as part of optimization.

Change-Id: I8ee8e7c37802b1d4d6b646c5a80bcada1112e14c
Merge "Update mk to remove Wallpapers apks"
Merge "kernel authentication is disabled from Boardconfig"
Merge "Added flag in System prop"
Merge "Add macro to control apps build at compile time"
Change cmdline to disable Uart logs.

This is for boot time optimization and saves ~2 seconds.

Change-Id: I86a7fe55a070f4c8dd04176cf3ca0f40b30a08bc
Merge "Change cmdline to disable Uart logs."