thinRoot 20221019

Changes:

• updated upstream kernel to 5.15.74 LTS.
• updated buildroot to 2022.08 and adapted patchset accordingly.
• added +gfx-thin-client option to queselect rdp callout script to feature advanced xfreerdp 2.8.0 settings.
• added missing CROCUS gallium driver for mesa3d and added 20-intel.conf xorg config file to take care of correct DRI/device OpenGL settings.
• use the powersave scaling governor as the default one.