UBSAN error on is_dsc_supported

["Limonciello, Mario" <Mario.Limonciello@xxxxxxx>]

[Public]

Hi stable,

Can you please pull in commit 63ad5371cd1e379519395c49a4b6a652c36c98e5 ("drm/amd/display: explicitly set is_dsc_supported to false before use") to 5.15.y?

This fixes address sanitizer errors on hotplug found by the Canonical team.

Thanks,