dt-bindings: iio: imu: add icm42686 inside inv_icm42600

Add bindings for ICM-42686-P chip supporting high FSRs.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240422152240.85974-2-inv.git-commit@tdk.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>