feat(icm42670): add support for spi interface in icm42670 (BSP-782)

[benjibst]

Change description

Added support for spi communication with ICM42670.

---

Note

Medium Risk
Introduces a new SPI transport path and refactors low-level icm42670_read/icm42670_write to switch between I2C and SPI, which could impact existing I2C behavior if transaction formatting or device selection is wrong. Changes are contained to the sensor driver and build metadata, with no security-sensitive logic.

Overview
Adds SPI communication support to the icm42670 sensor driver alongside existing I2C support.

Introduces icm42670_create_spi() and extends the internal device struct to track SPI vs I2C, routing icm42670_read/icm42670_write through spi_device_transmit() when SPI is selected (including MSB read flag handling) and cleaning up SPI devices in icm42670_delete(). Device-ID presence checking is centralized in a new check_device_present() helper.

Updates component metadata to require esp_driver_spi (IDF >= 5.3) and refreshes README/idf_component.yml descriptions to state I2C/SPI support.

^{Written by Cursor Bugbot for commit 57286f0. This will update automatically on new commits. Configure here.}

[CLAassistant]

All committers have signed the CLA.

[PetrESP]

Hello @benjibst,

Thank you for this pull request! Could you please install pre-commit to correctly format your code? You can follow our guide here.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.}

This PR is being reviewed by Cursor Bugbot

Details

Your team is on the Bugbot Free tier. On this plan, Bugbot will review limited PRs each billing cycle for each member of your team.

To receive Bugbot reviews on all of your PRs, visit the Cursor dashboard to activate Pro and start your 14-day free trial.