* gnu/packages/patches/xf86-video-intel-compat-api.patch, gnu/packages/patches/xf86-video-intel-glibc-2.20.patch: New files. * gnu-system.am (dist_patch_DATA): Add them. * gnu/packages/xorg.scm (xf86-video-intel): Update to 2.21.15. Add patches. Add eudev to inputs.