UPSTREAM: ARM: dts: rockchip: move the rk3288 thermal data into rk3288.dtsi

UPSTREAM: ARM: dts: rockchip: move the rk3288 thermal data into rk3288.dtsi

In order to be standard to manage for rockchip SoCs,  move the thermal
data into rk3288 dtsi, we needn't to add a new file for thermal.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Change-Id: I2b11b46d1cfb9b70882d1062dedc5b8ff1bd5adf
(cherry picked from commit f87305fa00b1d0633d2dc5fd7fb4995bed6a59e8)
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>