linuxPackages_6_10.perf: fix build

Revert upstream change that breaks things in a very strange way.
See commit being reverted for details.

pkgs/os-specific/linux/kernel/perf/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchurl
+, fetchpatch
 , kernel
 , elfutils
 , python3
@@ -60,6 +61,23 @@ stdenv.mkDerivation {
 
   inherit (kernel) src;
 
+  # Fix 6.10.0 holding pkg-config completely wrong.
+  # Patches from perf-tools-next, should be in 6.11 or hopefully backported.
+  patches = lib.optionals (lib.versionAtLeast kernel.version "6.10") [
+    (fetchpatch {
+      url = "https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/patch/?id=0f0e1f44569061e3dc590cd0b8cb74d8fd53706b";
+      hash = "sha256-9u/zhbsDgwOr4T4k9td/WJYRuSHIfbtfS+oNx8nbOlM=";
+    })
+    (fetchpatch {
+      url = "https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/patch/?id=366e17409f1f17ad872259ce4a4f8a92beb4c4ee";
+      hash = "sha256-NZK1u40qvMwWcgkgJPGpEax2eMo9xHrCQxSYYOK0rbo=";
+    })
+    (fetchpatch {
+      url = "https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/patch/?id=1d302f626c2a23e4fd05bb810eff300e8f2174fd";
+      hash = "sha256-KhCmof8LkyTcBBpfMEtolL3m3kmC5rukKzQvufVKCdI=";
+    })
+  ];
+
   postPatch = ''
     # Linux scripts
     patchShebangs scripts