Add rules for building the nvidia-cbootimage utility and add dependencies to the tegra124 platform. Change-Id: Ia9f26981bccd217fe79e1b5dd432ee7da868d22a Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6851 Reviewed-by: Aaron Durbin <adurbin@google.com> Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>