ARM: dts: msm: Add tupwr-disable property for MSM8953 and MSM8937

On MSM8953 and MSM8937, device will reset if cpu enters into power
collapse while etm trace unit is kept powered on. Add property to
control power of the trace unit for MSM8953 and MSM8937's ETM. Don't
keep trace unit powered across power collapse.

Change-Id: If1df95b2819b40a14749bada7b9a145ee77f788a
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>