samples: sensor: 6dof_motion_drdy: update naming

Rename ICM42670 define to ICM42X70 to be aligned with updated driver
to support icm42370-p

Signed-off-by: Aurelie Fontaine <[email protected]>

Author: afontaine-invn

samples/sensor/6dof_motion_drdy/prj.conf

@@ -16,4 +16,4 @@ CONFIG_CBPRINTF_FP_SUPPORT=y
 CONFIG_USE_SEGGER_RTT=n
 
 # Trigger mode: sample is using interrupt triggering
-CONFIG_ICM42670_TRIGGER_OWN_THREAD=y
+CONFIG_ICM42X70_TRIGGER_OWN_THREAD=y