drm/msm/dsi: Enable BURST_MODE for command mode for DSI 6G v1.3+

During a frame transfer in command mode, there could be frequent
LP11 <-> HS transitions when multiple DCS commands are sent mid-frame or
if the DSI controller is running on slow clock and is throttled. To
minimize frame latency due to these transitions, it is recommended to
send the frame in a single burst.

This feature is supported for DSI 6G 1.3 and above, thus enable burst
mode if supported.

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/544551/
Link: https://lore.kernel.org/r/20230608-b4-add-burst-mode-v2-1-2ff468457d46@quicinc.com


[DB: fixed indentation]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>