arm64: dts: amlogic: add rc-videostrong-kii-pro keymap

videostrong kii pro comes with a nec rc, add the keymap to the dts

Signed-off-by: Mohammad Rasim <mohammad.rasim96@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20200214085802.28742-4-mohammad.rasim96@gmail.com