[Freedreno] [PATCH v3 0/7] drm/msm/dpu: add support for independent DSI config

[Dmitry Baryshkov]

This patchseries adds support for independent DSI config to DPU1 display
subdriver. Also drop one of msm_kms_funcs callbacks, made unnecessary
now.

Tested on RB5 (dpu, dsi). Previous iteration was tested by Alexey
Minnekhanov.

Changes since v2:
 - Removed Reviewed-By tags from changed patches (1, 2)
 - Changed more dual DSI mentions in the patch 1
 - Added msm_dsi_is_master_dsi() helper
 - Rewrote dsi encoder setup function again basing on review by Abhinav

Cahanges since v1:
 - Rewrote dsi encoder setup function by separating common code sequence
   and calling it either for the bonded interface or twice for each of
   the DSI hosts.

Changes since RFC:
 - renamed dual DSI to bonded DSI as suggsted by Abhinav
 - added comments to _dpu_kms_initialize_dsi() regarding encoders usage