drm/mipi-dsi: wrap more functions for streamline handling

drm/mipi-dsi: wrap more functions for streamline handling

Follow the pattern of mipi_dsi_dcs_*_multi() and wrap several existing
MIPI DSI functions to use the context for processing. This simplifies
and streamlines driver code to use simpler code pattern.

Note, msleep function is also wrapped in this way as it is frequently
called inbetween other mipi_dsi_dcs_*() functions.

Signed-off-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Neil Armstrong <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]