msm: sde: extend support for 8 level rotator QoS remapper

QoS remapper is extended from 4 to 8 levels in sdm845.
Add support to configure 8 level QoS remapper.

Change-Id: I9e6c0733cba560cd36be3f548fedc8a35545f3ba
Signed-off-by: Alan Kwong <akwong@codeaurora.org>
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>