Merge: redhat: use new x86/aarch64 signing key (801/804)

MR: https://gitlab.com/redhat/rhel/src/kernel/rhel-10/-/merge_requests/404

JIRA: https://issues.redhat.com/browse/RHEL-116728
Upstream Status: RHEL only

Move to 800 series keys for x86 and aarch64, see also:
  https://issues.redhat.com/browse/SPRE-1886

Signed-off-by: Jan Stancek <jstancek@redhat.com>

Approved-by: Augusto Caringi <acaringi@redhat.com>
Approved-by: Eder Zulian <ezulian@redhat.com>
Approved-by: Patrick Talbert <ptalbert@redhat.com>

Merged-by: Jan Stancek <jstancek@redhat.com>

Author: jstancek

redhat/kernel.spec.template

@@ -926,7 +926,7 @@ Source13: redhatsecureboot501.cer
 %define pesign_name_0 centossecureboot201
 %else
 %ifarch x86_64 aarch64
-%define pesign_name_0 redhatsecureboot501
+%define pesign_name_0 redhatsecureboot801
 %endif
 %ifarch s390x
 %define pesign_name_0 redhatsecureboot302
@@ -2785,7 +2785,7 @@ BuildKernel() {
 %if 0%{?centos}
         UKI_secureboot_name=centossecureboot204
 %else
-        UKI_secureboot_name=redhatsecureboot504
+        UKI_secureboot_name=redhatsecureboot804
 %endif
         UKI_secureboot_cert=%{_datadir}/pki/sb-certs/secureboot-uki-virt-%{_arch}.cer