bmi160: sync getStateName() with enum SensorState

getStateName() was out of sync with enum SensorState, generating
incorrect logs when DBG_STATE is enabled.

Change-Id: I12eb0285da880bf18f787f26148d5e75e421802f
diff --git a/firmware/os/drivers/bosch_bmi160/bosch_bmi160.c b/firmware/os/drivers/bosch_bmi160/bosch_bmi160.c
index 3f272d6..2cbd04e 100644
--- a/firmware/os/drivers/bosch_bmi160/bosch_bmi160.c
+++ b/firmware/os/drivers/bosch_bmi160/bosch_bmi160.c
@@ -400,7 +400,7 @@
 static const char * getStateName(int32_t s) {
     // keep this in sync with SensorState
     static const char* const l[] = {"BOOT", "VERIFY_ID", "INIT", "IDLE", "PWR_UP",
-            "PWR-DN", "CFG_CHANGE", "INT1", "INT2", "CALIB", "STEP_CNT", "SYNC", "SAVE_CALIB"};
+            "PWR-DN", "CFG_CHANGE", "INT1", "INT2", "CALIB", "TEST", "STEP_CNT", "SYNC", "SAVE_CALIB"};
     if (s >= 0 && s < SENSOR_NUM_OF_STATE) {
         return l[s];
     }