GSD-2023-1001305 drm/sti: Fix return type of sti_{dvo,hda,hdmi}_connector_mode_valid()

drm/sti: Fix return type of stidvo,hda,hdmiconnectormodevalid This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.163 by commit...