i2c: hix5hd2: Fix modalias to make module auto-loading work

Make the modalias match driver name, this is required to make module
auto-loading work.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org