UPSTREAM: clk: rockchip: add id of the tsadc clock found on rk3228 SoCs

UPSTREAM: clk: rockchip: add id of the tsadc clock found on rk3228 SoCs

This patch adds 'SCLK_TSADC' and 'PCLK_TSADC' id found on rk3228 SoCs.
That will be needed by TSADC controller.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Acked-by: Michael Turquette <mturquette@baylibre.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-clk/next commit 3629e70b8c78ec7a40d5c4fd1356b9dc1937d326)

Change-Id: Ia4c926d4decc9affd63510a794d7f2553f6be3a5
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>