linux-firmware: Fix hardware sleep regression in amdnpu firmware

linux-firmware 20260221 introduced new AMD NPU firmware that’s
incompatible with kernels before the unreleased 7.0-rc versions,
preventing affected devices from going into sleep.  Apply the upstream
patch that restores the old files for current kernels and renames the
new files for unreleased kernels.

https://gitlab.freedesktop.org/drm/amd/-/issues/5009
https://gitlab.com/kernel-firmware/linux-firmware/-/merge_requests/935

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

pkgs/by-name/li/linux-firmware/package.nix

@@ -1,6 +1,7 @@
 {
   stdenvNoCC,
   fetchFromGitLab,
+  fetchpatch,
   lib,
   python3,
   rdfind,
@@ -31,6 +32,15 @@ stdenvNoCC.mkDerivation rec {
     hash = "sha256-QHoS9+WS9IjRVhTJEFF/X8+4ZKjKwpJAvf7EqsV+qEY=";
   };
 
+  patches = [
+    # amdnpu: Restore old NPU firmware for compatibility
+    # https://gitlab.com/kernel-firmware/linux-firmware/-/merge_requests/935
+    (fetchpatch {
+      url = "https://gitlab.com/kernel-firmware/linux-firmware/-/commit/58cf579b98c0c4878deeda1acb5db70e699875b5.patch";
+      hash = "sha256-2UO9CxGM2Asb/fRAST4zRlMBSVjM+N/87NzSkSoQrQ0=";
+    })
+  ];
+
   postUnpack = ''
     patchShebangs .
   '';