Revert "drm/atomic-helper: Re-order bridge chain pre-enable and post-disable"

Revert "drm/atomic-helper: Re-order bridge chain pre-enable and post-disable"

This reverts commit c9b1150a68d9362a0827609fc0dc1664c0d8bfe1.

Changing the enable/disable sequence has caused regressions on multiple
platforms: R-Car, MCDE, Rockchip. A series (see link below)  was sent to
fix these, but it was decided that it's better to revert the original
patch and change the enable/disable sequence only in the tidss driver.

Reverting this commit breaks tidss's DSI and OLDI outputs, which will be
fixed in the following commits.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://lore.kernel.org/all/20251202-mcde-drm-regression-thirdfix-v6-0-f1bffd4ec0fa%40kernel.org/
Fixes: c9b1150a68d9 ("drm/atomic-helper: Re-order bridge chain pre-enable and post-disable")
Cc: stable@vger.kernel.org # v6.17+
Reviewed-by: Aradhya Bhatia <aradhya.bhatia@linux.dev>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Tested-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20251205-drm-seq-fix-v1-1-fda68fa1b3de@ideasonboard.com