Move sysfs_thermal definition to global policy.
Move sysfs_thermal definition to global policy.

(cherry-pick of internal commit: 72d8d712f20b31300ac4b106ded1d1389b73615d)

Bug: 27809332
Change-Id: I441ac5c458af92725c90e99f5a3c79bdb046371e

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead