Revert "drm/radeon/pm: adjust display configuration after powerstate"

[ Upstream commit d74e766e1916d0e09b86e4b5b9d0f819628fd546 ]

This reverts commit 39d4275058baf53e89203407bf3841ff2c74fa32.

This caused a regression on some older hardware.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=113891



Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>