drm/omap: dsi: Fix crash in DSI debug dumps

drm/omap: dsi: Fix crash in DSI debug dumps

[ Upstream commit 4df04ac9b37f278c48bb696289aff8f81226af4b ]

Reading any of the DSI debugfs files results in a crash, as wrong
pointer is passed to the dump functions, and the dump functions use a
wrong pointer. This patch fixes DSI debug dumps.

Fixes: f3ed97f9ae7d ("drm/omap: dsi: Simplify debugfs implementation")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190111035120.20668-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>