spi: uniphier: remove unnecessary code

This commit removed if() because priv->is_save_param is always true.

Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com>
Link: https://lore.kernel.org/r/1567488661-11428-3-git-send-email-hayashibara.keiji@socionext.com


Signed-off-by: Mark Brown <broonie@kernel.org>