[RFC][PATCH 2/2] drm: kirin: Restrict modes to known good mode clocks

Currently the hikey dsi logic cannot generate accurate byte clocks values for all pixel clock values. Thus if a mode clock is selected that cannot match the calculated byte clock, the device will boot with a blank screen. This patch uses the new mode_valid callback to enforces known good mode

[RFC][PATCH 2/2] drm: kirin: Restrict modes to known good mode clocks

Currently the hikey dsi logic cannot generate accurate byte clocks values for all pixel clock values. Thus if a mode clock is selected that cannot match the calculated byte clock, the device will boot with a blank screen. This patch uses the new mode_valid callback to enforces known good mode