spi: SPI core CS delay fixes and additions
Merge series from Hector Martin <marcan@marcan.st>: Commits f6c911f3 ("spi: dt-bindings: Introduce spi-cs-setup-ns property") and 33a2fde5 ("spi: Introduce spi-cs-setup-ns property") introduced a new property to represent the CS setup delay in the device tree, but they have some issues: - The property is only parsed as a 16-bit integer number of nanoseconds, which limits the maximum value to ~65us. This is not a reasonable upper limit, as some devices might need a lot more. - The property name is inconsistent with other delay properties, which use a "*-delay-ns" naming scheme. - Only the setup delay is introduced, but not the related hold and inactive delay times. This series fixes the issues and adds support for the two missing properties. Please pull in the first 3 patches as fixes for 6.2, to avoid introducing a problematic DT API in this release. The last two patches can wait until 6.3, though are probably harmless to throw in as fixes too, since they're trivial.
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