qcom-common: Move reboot options to cm_arrays.xml

* Also temporarily changed reboot_download to reboot_bootloader
  since the former is currently missing.

Change-Id: Ie5925972f0e4a53f6c6b6786860c1981c83f9f11
Merge remote-tracking branch 'cm/cm-12.0' into HEAD

Conflicts:
	overlay/frameworks/base/core/res/res/values/arrays.xml

Change-Id: Ib7f9a3023538287b4dea12665ec39136c7e02e57