boards: Fix defconfig for tdk_robotkit1

The TDK robokit1 was using the wrong SOC part number by default
which was causing a warning at boot time.

See https://invensense.wpenginepowered.com/wp-content/uploads/2022/09/C21362-TDK-RoboKit1-DK-PLOT.pdf



Signed-off-by: Yuval Peress <peress@google.com>