[1/2] base: add CPU info overlay

this shows
CPU temp (if available)
for every core governor + online + freq

PS3:
increased font size

PS4:
whitespace cleanup

PS5:
more of that :(

Change-Id: I8e2fd81edd8499eea2b1a6de8c042938387b33ef
[1/4] framework: custom brightness support

    Adds separate handling of button brightness for devices
    that supports it. Enabled with config_button_brightness_support
    else the behaviour will be the same as before

    Also if enabled but no custom values are set will fallback
    to the previous behaviour

    This also needs support of setting button brightness separately
    in liblights code of the device.

    Options:
    -brightness spline for buttons in automatic mode
    -custom brightness value for buttons in manual mode
    -options to competely disable buttons in both modes
    -option to always fallback to same value as screen brightness

    This also brings in:
    -support for custom responsivness value for automatic mode
    -custom twilight support enablement

Change-Id: I79cc8cf3a9b488b857929f327cb67a770ec81916

Conflicts:
	services/java/com/android/server/power/DisplayPowerRequest.java
	services/java/com/android/server/power/PowerManagerService.java
Revert "[1/4] framework: custom brightness support"

This reverts commit afcc947baa991a44c046db04eefabb96ab6b798e.
[2/2] Add support for custom LED colors notification

Originally from dvtonder (CyanogenMod)

Change-Id: Iab519a757220c444f166b8a05246c7ca71b897d8