drm/msm/dsi: implement opp table based check for dsi_mgr_bridge_mode_valid()

Currently there is no protection against a user trying to set
an unsupported mode on DSI. Implement a check based on the opp
table whether the byte clock for the mode can be supported by
validating whether an opp table entry exists.

For devices which have not added opp table support yet, skip
this check otherwise it will break bootup on those devices.

changes in v3:
	- make the comment shorter
	- handle all errors except ENODEV

Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/15
Reported-by: Rob Clark <[email protected]>
Signed-off-by: Abhinav Kumar <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/518008/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Baryshkov <[email protected]>

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