Use GRUB legacy loader for HP t520 to fix boot with GRUB 2.12

HP t520 have been reported to have the same issues as Atom boards with bad UEFI
firmware that doesn't work well with the new EFI loader used since GRUB 2.12.
Apply the patch to use legacy loader for its CPU ID as well.

Fixes #3557

buildroot-external/patches/grub2/0002-loader-efi-linux-use-legacy-loader-for-broken-Intel-.patch

@@ -1,7 +1,7 @@
-From c18ab299696dbb2fc092242e271068534ce9159c Mon Sep 17 00:00:00 2001
+From 545edfcbb505dfa0fc007416dc8b69a8e65f9557 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Jan=20=C4=8Cerm=C3=A1k?= <[email protected]>
 Date: Tue, 30 Jul 2024 18:27:24 +0200
-Subject: [PATCH 1/1] loader/efi/linux: use legacy loader for broken Intel NM10
+Subject: [PATCH] loader/efi/linux: use legacy loader for broken Intel NM10
  platforms
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
@@ -23,13 +23,19 @@ that can not use the legacy loader, causing any unexpected failures.
 [1] https://lists.gnu.org/archive/html/grub-devel/2024-05/msg00117.html
 [2] https://lists.gnu.org/archive/html/grub-devel/2024-07/msg00009.html
 
+----
+
+Also AMD GX-212JC in HP t520 seems to be affected as reported in [3].
+
+[3] https://github.com/home-assistant/operating-system/issues/3557
+
 Signed-off-by: Jan Čermák <[email protected]>
 ---
- grub-core/loader/efi/linux.c | 65 +++++++++++++++++++++++++++++++++++-
- 1 file changed, 64 insertions(+), 1 deletion(-)
+ grub-core/loader/efi/linux.c | 66 +++++++++++++++++++++++++++++++++++-
+ 1 file changed, 65 insertions(+), 1 deletion(-)
 
 diff --git a/grub-core/loader/efi/linux.c b/grub-core/loader/efi/linux.c
-index bfbd95aee..f4fc6d25c 100644
+index bfbd95aee..efeb692f8 100644
 --- a/grub-core/loader/efi/linux.c
 +++ b/grub-core/loader/efi/linux.c
 @@ -24,6 +24,7 @@
@@ -40,7 +46,7 @@ index bfbd95aee..f4fc6d25c 100644
  #include <grub/types.h>
  #include <grub/efi/efi.h>
  #include <grub/efi/fdtload.h>
-@@ -452,6 +453,67 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
+@@ -452,6 +453,68 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
    return grub_errno;
  }
 
@@ -90,7 +96,8 @@ index bfbd95aee..f4fc6d25c 100644
 +           * false positives instead).
 +           */
 +          return (processor_id == 0xbfebfbff00030661      // D2xxx/N2xxx
-+                  || processor_id == 0xbfebfbff000106ca); // D525
++                  || processor_id == 0xbfebfbff000106ca   // D525
++                  || processor_id == 0x00730f01178bfbff); // AMD GX-212JC (HP t520)
 +        }
 +      else
 +        {
@@ -108,7 +115,7 @@ index bfbd95aee..f4fc6d25c 100644
  static grub_err_t
  grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
  		int argc, char *argv[])
-@@ -490,7 +552,8 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
+@@ -490,7 +553,8 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
 
    kernel_size = grub_file_size (file);