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

MAINTAINERS

@@ -11450,6 +11450,12 @@ F:	drivers/mfd/khadas-mcu.c
 F:	include/linux/mfd/khadas-mcu.h
 F:	drivers/thermal/khadas_mcu_fan.c
 
+KIONIX/ROHM KX022A ACCELEROMETER
+M:	Matti Vaittinen <mazziesaccount@gmail.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+F:	drivers/iio/accel/kionix-kx022a*
+
 KMEMLEAK
 M:	Catalin Marinas <catalin.marinas@arm.com>
 S:	Maintained