Revert "drm/amd/display: parse umc_info or vram_info based on ASIC"

This reverts commit 694c7976.

This was not the root cause.  Revert.

Link: drm/amd#3678


Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: aurabindo.pillai@amd.com
Cc: hamishclaxton@gmail.com
(cherry picked from commit 3c2296b1)
Cc: stable@vger.kernel.org # 6.11.x