ARM: dts: msm: update rotator QoS remap table for sdm845

Rotator QoS remapper is updated to 8 levels. Update QoS
remapper property to specify 8 priority levels.

Change-Id: I905ac51b4fc0ed968d0d9ba880fcaf1822e0dff8
Signed-off-by: Alan Kwong <akwong@codeaurora.org>
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>