UPSTREAM: ARM: dts: rockchip: enable the tsadc for rk3228 evb

UPSTREAM: ARM: dts: rockchip: enable the tsadc for rk3228 evb

This patch enables the tsadc for rk3228 evb board.

The rk3228 evb board uses the CRU to reset the chip since it hasn't the
PMIC to connect it, and TSHUT is low active on evb board.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
(cherry picked from git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git
v4.8-armsoc/dts32 commit 26f5e19dfb07de627112074721f254482f941dab)

Change-Id: I12ce9b1e2fb2c740bef100a22d746d5e128253e6
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>