Add complete driver support for the QST QMI8658 6-axis IMU sensor featuring
3-axis accelerometer and 3-axis gyroscope with I2C interface and uORB
integration.
Key features implemented:
* Full I2C communication with configurable frequency (default 400kHz)
* Multiple accelerometer ranges (±2g, ±4g, ±8g, ±16g) and ODR settings
* Multiple gyroscope ranges (±16 to ±1024 dps) with high ODR support
* Low-pass filter configuration for both sensors
* Temperature sensing with 16-bit resolution
* Self-test capability for both accelerometer and gyroscope
* Calibration-on-demand support with offset registers
* FIFO buffer management (framework ready)
* Interrupt-driven and polling mode support
* Complete uORB integration with sensor_accel and sensor_gyro topics
Driver components added:
* Core driver implementation (qmi8658_uorb.c) with register operations
* Header file with register definitions and scale factors (qmi8658.h)
* Kconfig options for driver configuration and polling mode
* Build system integration (CMakeLists.txt, Make.defs)
* Comprehensive documentation with API reference and usage examples
The driver follows NuttX sensor framework conventions and provides
robust error handling, mutex protection, and comprehensive debugging
support through CONFIG_DEBUG_SENSORS.
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
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