drm/amd/display: fix issues with incorrectly detecting UPDATE_TYPE_FULL

This is due to how structures are being packed with padding added.
Structure field initialization doesn't clear the padding bytes, which cause
our memcmp to give incorrect result.

Move smaller structure parameters to end of structure.

Signed-off-by: Anthony Koo <anthony.koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>