ANDROID: revert all remaining hisi_thermal.c changes

hisi_thermal.c changes do not belong in the android-common tree, as
there is a separate tree just for this board.  Revert the remaining
changes here as it is causing build and merge issues.

Reported-by: Todd Kjos <tkjos@google.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>