since kernel 6.4, commit bca2f3a9406b ("efi/zboot: Add BSS padding
before compression") introduces the use of hexdump to padding the
EFI kernel binary before compression.
util-linux which containing hexdump should then be compiled as a host
tool to guarantee not breaking the kernel build process.
Signed-off-by: Weijie Gao <hackpascal@gmail.com>
