settings: Deprecate has_led_flash, move to framework.

 * We need this to configure default tiles in SystemUI so move it.
 * Leave the old one in place so we don't kill every device.

Change-Id: I883f9595f74ab52c8c8152e0105400aaefff4afe
Settings revamp
Signed-off-by: Kristofer Ard <kristoferard@gmail.com>
Merge branch 'halo' into jb-mr2

Signed-off-by: Kristofer Ard <kristoferard@gmail.com>

Conflicts:
	res/xml/system_ui_settings.xml
Merge branch 'cm-10.2' of https://github.com/CyanogenMod/android_packages_apps_Settings into jb-mr2