ARM: dts: rockchip: Use correct dts properties for tsadc node on veyron

tsadc-tshut-mode and tsadc-tshut-polarity properties don't exist. The rockchip
thermal driver looks for rockchip,hw-tshut-mode and rockchip,hw-tshut-polarity
instead, otherwise it might freeze or hang the device according to the default
mode or polarity used.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>