buildtar: fix tarballs with EFI_ZBOOT enabled

When CONFIG_EFI_ZBOOT is enabled, the binary name is not Image.gz
anymore but vmlinuz.efi. No vmlinuz gets put into the tarball as the
buildtar script doesn't recognize this name. Remedy this by adding the
binary name to the list of acceptable files to package.
Reported-by: CKI Project <cki-project@redhat.com>
Signed-off-by: Veronika Kabatova <vkabatov@redhat.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/package/buildtar

@@ -122,7 +122,7 @@ case "${ARCH}" in
 		fi
 		;;
 	arm64)
-		for i in Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo ; do
+		for i in Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo vmlinuz.efi ; do
 			if [ -f "${objtree}/arch/arm64/boot/${i}" ] ; then
 				cp -v -- "${objtree}/arch/arm64/boot/${i}" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
 				break