ARM: dts: msm: Add CPP master and modify QoS for VPU on MSM8994

Add CPP master on MMNOC and change the QoS setting for VPU on MSM8994
in accordance with recommended settings.

Change-Id: Id43b9df0109ce49ca06f9e6bd78295beaa53ae5f
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>