Fixing a bug-ridden build for aarch64( Added %{_build_arch} )

https://elrepo.org/linux/kernel/el9/SRPMS/

Updating the kernel version to 6.12.1

Reviewed-on: rpms/kernel-ml#1
Co-authored-by: ebasov <eduard.basov@softline.com>
Co-committed-by: ebasov <eduard.basov@softline.com>

SPECS/kernel-ml-6.12.spec

@@ -727,7 +727,7 @@ popd > /dev/null
 %define __modsign_install_post \
 if [ "%{signmodules}" -eq "1" ]; then \
 	if [ "%{with_std}" -ne "0" ]; then \
-		%{SOURCE21} linux-%{version}-%{release}.x86_64/certs/signing_key.pem.sign linux-%{version}-%{release}.x86_64/certs/signing_key.x509.sign $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/ \
+		%{SOURCE21} linux-%{version}-%{release}.%{_build_arch}/certs/signing_key.pem.sign linux-%{version}-%{release}.%{_build_arch}/certs/signing_key.x509.sign $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/ \
 	fi \
 fi \
 if [ "%{zipmodules}" -eq "1" ]; then \
@@ -879,7 +879,7 @@ cp -a --parents tools/include/tools/le_byteshift.h $RPM_BUILD_ROOT/lib/modules/%
 cp -a --parents tools/include/linux/compiler* $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
 cp -a --parents tools/include/linux/types.h $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
 cp -a --parents tools/build/Build.include $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
-cp --parents tools/build/Build $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
+# cp --parents tools/build/Build $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
 cp --parents tools/build/fixdep.c $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
 cp --parents tools/objtool/sync-check.sh $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
 cp -a --parents tools/bpf/resolve_btfids $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build