ARM: dts: msm: Enable traffic shaper for rotator in 8916

Add traffic shaper boolean property in DT to ensure
rotator bandwidth requests doesn't have high peaks
instead evenly spread over time.

Change-Id: I2dc630e036e19c6d9d5fb6fcedb11cc795a54d9a
Signed-off-by: Jayant Shekhar <jshekhar@codeaurora.org>