disp: msm: dp: skip powering down dp host in mst mode
If DP is running in mst mode, DP host should not power down during unprepare call as aux need keep alive to handle further hot-plug sideband message. Unless it is a PM suspend scenario where it is required to deinit the host. Change-Id: I208894e1cbc75e727044c196194b0a4e3936921e Signed-off-by:Xiaowen Wu <wxiaowen@codeaurora.org> Signed-off-by:
Sankeerth Billakanti <sbillaka@codeaurora.org>
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