The wlf-gf-module driver doesn't use the driver_data member of struct
i2c_device_id, so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240708152530.19306-2-u.kleine-koenig@baylibre.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>