spi: tegra114: Use value to check for invalid delays

A delay unit of 0 is a valid entry, thus it is not valid to check for
unused delays. Instead, check the value field; if that is zero, the
given delay is unset.

Fixes: 4426e6b4 ("spi: tegra114: Don't fail set_cs_timing when delays are zero")
Cc: stable@vger.kernel.org
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20250506-spi-tegra114-fixup-v1-1-136dc2f732f3@gmail.com


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