It is frequent to find variable definitions like this:
```c
static const struct device *dev = DEVICE_DT_GET(...)
```
That is, module level variables that are statically initialized with a
device reference. Such value is, in most cases, never changed meaning
the variable can also be declared as const (immutable). This patch
constifies all such cases.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Adds a simple test case against the FXOS8700 sensor and its
built in FIFO using i2c. Pulls data from the sensor using both
synchronous and asynchronous transfers.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
