Add slave support to spi_mcux_lpspi driver

[nelarsen]

The LPSPI MCUXpresso driver does not support SPI slave operation yet. And since the "spi-bitbang" driver does not supports SPI master operation too, it is currently necessary to use the low-level MCUXpresso NXP HAL directly to get SPI slave operation running with Zephyr on i.MX7 CPUs.

See also: #51306

[zephyrbot]

Hi @tbursztyka, @dleach02,

This issue, marked as an Enhancement, was opened a while ago and did not get any traction. It was just assigned to you based on the labels. If you don't consider yourself the right person to address this issue, please re-assing it to the right person.

Please take a moment to review if the issue is still relevant to the project. If it is, please provide feedback and direction on how to move forward. If it is not, has already been addressed, is a duplicate, or is no longer relevant, please close it with a short comment explaining the reason.

@nelarsen you are also encouraged to help moving this issue forward by providing additional information and confirming this request/issue is still relevant to you.

Thanks!

[1Miguel]

Any chance this will happen?

[wjakobczyk]

Upvoting :)