kmod: add patch to correct behaviour with --field

This came up in https://github.com/NixOS/nixpkgs/pull/96008.
Without this patch modinfo always prints the module name for builtin
modules, even if an explicit --field is passed.

pkgs/os-specific/linux/kmod/default.nix

···
     "--with-modulesdirs=${modulesDirs}"
   ] ++ lib.optional withStatic "--enable-static";
 
-  patches = [ ./module-dir.patch ]
+  patches = [ ./module-dir.patch ./no-name-field.patch ]
     ++ lib.optional stdenv.isDarwin ./darwin.patch
     ++ lib.optional withStatic ./enable-static.patch;
 

pkgs/os-specific/linux/kmod/no-name-field.patch

···
+
+---
+ tools/modinfo.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/tools/modinfo.c b/tools/modinfo.c
+index 0231bb0..7b2259e 100644
+--- a/tools/modinfo.c
++++ b/tools/modinfo.c
+@@ -178,7 +178,10 @@ static int modinfo_do(struct kmod_module *mod)
+ 	is_builtin = (filename == NULL);
+ 
+ 	if (is_builtin) {
+-		printf("%-16s%s%c", "name:", kmod_module_get_name(mod), separator);
++		if (field == NULL || field != NULL && streq(field, "name")){
++			printf("%-16s%s%c", "name:",
++			       kmod_module_get_name(mod), separator);
++		}
+ 		filename = "(builtin)";
+ 	}
+ 
+-- 
+2.28.0
+