add: cachy kernel,drm

nixos/boot/default.nix

@@ -1,7 +1,7 @@
 { config, pkgs, ... }:
 
 {
-  boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.kernelPackages = pkgs.linuxPackages_cachyos;
 
   boot.kernelParams = [
      "i915.enable_guc=2" #make your own params this is for hd4k

nixos/hardware/graphics/intel.nix

@@ -17,6 +17,7 @@
   environment.variables = {
     LIBVA_DRIVER_NAME = "i965";
     LIBVA_DRM_DEVICE = "/dev/dri/renderD128";
+    LIBVA_DISPLAY = "drm";
     VK_ICD_FILENAMES = "/run/opengl-driver/share/vulkan/icd.d/intel_hasvk_icd.x86_64.json";
   };
 }