MAINTAINERS: Add KX022A maintainer entry

Add maintainer entry for ROHM/Kionix KX022A accelerometer sensor driver.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/7895435f7fd31a3b576fc6a59b01eb3202c85d36.1666614295.git.mazziesaccount@gmail.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>