platform: msm_shared: add proper check before waiting for VIDEO_DONE

We need to wait for VIDEO_DONE interrupt before sending a DSI
command only when DSI video mode is enabled. Hence, add check
for that before waiting for the interrupt. This makes the
'cmds_post_tg' variable as part of 'mipi_dsi_cmd' structure
redundant and hence remove it. Also make appropriate changes
for JDI 4K video mode panel to remove this variable.

Change-Id: I50be049f03964d58af51a9ab28c828c8a230ee2b
3 files changed