perf: separateDebugInfo = true

Signed-off-by: Austin Seipp <[e-mail]>

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

···
       "-Wno-error=unused-const-variable" "-Wno-error=misleading-indentation"
     ];
 
+  separateDebugInfo = true;
   installFlags = "install install-man ASCIIDOC8=1";
 
   preFixup = ''