siu is using discriminatory terms for function parameter.
This patch changes it to "secondary"

One note here is that it do nothing to DMA related naming
for now, because it needs framework level modification.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87d04z3qqg.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>