HBSD: improve usr.sbin/hbsd-update/hbsd-update
1. HBSD: exclude /boot/efi with tar
2. HBSD: improve the help options
3. HBSD: improve the debug_print display
Signed-off-by: Loic <loic.f@hardenedbsd.org>
MFC-to: 13-STABLE
MFC-to: 12-STABLE