Add RISC-V cross-compilation target for CI

pkgs/amd-uprof/default.nix

@@ -86,4 +86,7 @@ in
       patchelf --add-needed libnuma.so $out/bin/AMDuProfPcm
       set +x
     '';
+    meta = {
+      platforms = [ "x86_64-linux" ];
+    };
   }

pkgs/amd-uprof/driver.nix

@@ -28,6 +28,6 @@ in stdenv.mkDerivation {
   meta = {
     description = "AMD Power Profiler Driver";
     homepage = "https://www.amd.com/es/developer/uprof.html";
-    platforms = lib.platforms.linux;
+    platforms = [ "x86_64-linux" ];
   };
 }

pkgs/cudainfo/default.nix

@@ -40,4 +40,5 @@ stdenv.mkDerivation (finalAttrs: {
     '';
     installPhase = "touch $out";
   };
+  meta.platforms = [ "x86_64-linux" ];
 })