ARM: dts: msm: enable PM QoS for rotator path for SDM670

Enable PM QoS for rotator for SDM670 by defining the CPU mask
and the latency values.

Change-Id: Ic0e56b832beed3a3751a4d4a4e03340a12899a20
Signed-off-by: Raviteja Tamatam <travitej@codeaurora.org>