fw: Move Secure settings to CMSettings

This moves all Settings.Secure.* settings that, were added to
CyanogenMod, to CMSettings.

 * KEYBOARD_BRIGHTNESS
 * BUTTON_BRIGHTNESS
 * BUTTON_BACKLIGHT_TIMEOUT
 * DEV_FORCE_SHOW_NAVBAR
 * ADB_NOTIFY
 * ADB_PORT
 * DEVICE_HOSTNAME
 * KILL_APP_LONGPRESS_BACK
 * PROTECTED_COMPONENTS
 * LIVE_DISPLAY_COLOR_MATRIX
 * ADVANCED_REBOOT
 * POWER_MENU_ACTIONS
 * DEFAULT_THEME_COMPONENTS
 * THEME_PREV_BOOT_API_LEVEL

Change-Id: I49e9160177ffc727b20008817ac2b5ce5e89ead5