This installs VOF-related binaries (the firmware and the preformatted
NVRAM) as those were left out when the VOF was submitted initially.

Fixes: fc8c745d ("spapr: Implement Open Firmware client interface")
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20220208103751.1587902-1-aik@ozlabs.ru>
Signed-off-by: Cédric Le Goater <clg@kaod.org>