sensors: tmp112: trivial: Add comment about using this driver for TMP102

I have been using this the TMP112 driver with success with a TMP102
connected to to nucleo-f411re board (via I2C1 using PB8/9).

According to the datasheets, both devices are both driver and pin
compatible although the TMP102 is less accurate.
This temperature sensor is not a thermopile sensor type as stated in
comments.

This patch updates that help info

Signed-off-by: Mark Vels <mark.vels@team-embedded.nl>