grub2: patch to work with updated binutils

This blocked some EFI stuff and consequently the channels.
I would fetchpatch, but their cgit server won't work on this commit.

pkgs/tools/misc/grub/2.0x.nix

@@ -47,6 +47,21 @@ stdenv.mkDerivation rec {
     sha256 = "03vvdfhdmf16121v7xs8is2krwnv15wpkhkf16a4yf8nsfc3f2w1";
   };
 
+  patches = [
+    ./fix-bash-completion.patch
+    # This patch makes grub compatible with the XFS sparse inode
+    # feature introduced by xfsprogs-4.16.
+    # to be removed in grub-2.03
+    (fetchpatch {
+      url = https://git.savannah.gnu.org/cgit/grub.git/patch/?id=cda0a857dd7a27cd5d621747464bfe71e8727fff;
+      sha256 = "0k9qrkdxwdqk6sz05q9smqwjr6pvgc9adx1mlf0807g4im91xnm0";
+    })
+    ./relocation-not-implemented.diff
+  ];
+  postPatch = ''
+    substituteInPlace ./configure --replace '/usr/share/fonts/unifont' '${unifont}/share/fonts'
+  '';
+
   nativeBuildInputs = [ bison flex python pkgconfig ];
   buildInputs = [ ncurses libusb freetype gettext lvm2 fuse ]
     ++ optional doCheck qemu
@@ -57,10 +72,6 @@ stdenv.mkDerivation rec {
   # Work around a bug in the generated flex lexer (upstream flex bug?)
   NIX_CFLAGS_COMPILE = "-Wno-error";
 
-  postPatch = ''
-    substituteInPlace ./configure --replace '/usr/share/fonts/unifont' '${unifont}/share/fonts'
-  '';
-
   preConfigure =
     '' for i in "tests/util/"*.in
        do
@@ -82,17 +93,6 @@ stdenv.mkDerivation rec {
       unset CPP # setting CPP intereferes with dependency calculation
     '';
 
-  patches = [
-    ./fix-bash-completion.patch
-    # This patch makes grub compatible with the XFS sparse inode
-    # feature introduced by xfsprogs-4.16.
-    # to be removed in grub-2.03
-    (fetchpatch {
-      url = https://git.savannah.gnu.org/cgit/grub.git/patch/?id=cda0a857dd7a27cd5d621747464bfe71e8727fff;
-      sha256 = "0k9qrkdxwdqk6sz05q9smqwjr6pvgc9adx1mlf0807g4im91xnm0";
-    })
-  ];
-
   configureFlags = [ "--enable-grub-mount" ] # dep of os-prober
     ++ optional zfsSupport "--enable-libzfs"
     ++ optionals efiSupport [ "--with-platform=efi" "--target=${efiSystemsBuild.${stdenv.hostPlatform.system}.target}" "--program-prefix=" ]

pkgs/tools/misc/grub/relocation-not-implemented.diff

@@ -0,0 +1,25 @@
+https://git.savannah.gnu.org/cgit/grub.git/commit/util?id=842c390469e2c2e10b5
+diff --git a/util/grub-mkimagexx.c b/util/grub-mkimagexx.c
+index a2bb054..39d7efb 100644
+--- a/util/grub-mkimagexx.c
++++ b/util/grub-mkimagexx.c
+@@ -841,6 +841,7 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
+ 		  break;
+ 
+ 		case R_X86_64_PC32:
++		case R_X86_64_PLT32:
+ 		  {
+ 		    grub_uint32_t *t32 = (grub_uint32_t *) target;
+ 		    *t32 = grub_host_to_target64 (grub_target_to_host32 (*t32)
+diff --git a/util/grub-module-verifier.c b/util/grub-module-verifier.c
+index 9179285..a79271f 100644
+--- a/util/grub-module-verifier.c
++++ b/util/grub-module-verifier.c
+@@ -19,6 +19,7 @@ struct grub_module_verifier_arch archs[] = {
+       -1
+     }, (int[]){
+       R_X86_64_PC32,
++      R_X86_64_PLT32,
+       -1
+     }
+   },