Now that we have a BMI160 driver and emulator pair that support both
I2C and SPI, add a test that runs over both buses.
Signed-off-by: Simon Glass <sjg@chromium.org>
Using the SPI emulator we can create a simple test for the BMI160
driver. Add this an enable it for native_posix.
Signed-off-by: Simon Glass <sjg@chromium.org>