sensor: icm42688 configuration and regmap fixes

The int config and fifo config register addresses were wrong, fix those.

Adds lots of debug information (when LOG_DBG=y) to the configuration of the
device which is incredibly helpful for diagnosing configuration issues.

Disables the device interrupts while reconfiguring. Adds a safely
reconfigure function which will rollback to previous configuration
on misconfiguration.

Signed-off-by: Tom Burdick <thomas.burdick@intel.com>