Fix colorspace warning on MST displays

[Mario Limonciello <mario.limonciello@xxxxxxx>]

Hi,

There are some warning traces being reported in linux-6.5.y related to 
the relatively recent colorspace property.

A workaround is landed in 6.6-rc1 to avoid the traces.

Can you please backport this back to linux-6.5.y?

69a959610229 ("drm/amd/display: Temporary Disable MST DP Colorspace 
Property")

Thanks!