MAINTAINERS: add entry for plantower pms7003 driver

Add myself as a plantower pms7003 driver maintainer.
Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS

@@ -12775,6 +12775,12 @@ F:	drivers/i2c/busses/i2c-puv3.c
 F:	drivers/video/fbdev/fb-puv3.c
 F:	drivers/rtc/rtc-puv3.c
 
+PLANTOWER PMS7003 AIR POLLUTION SENSOR DRIVER
+M:	Tomasz Duszynski <tduszyns@gmail.com>
+S:	Maintained
+F:	drivers/iio/chemical/pms7003.c
+F:	Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
+
 PMBUS HARDWARE MONITORING DRIVERS
 M:	Guenter Roeck <linux@roeck-us.net>
 L:	linux-hwmon@vger.kernel.org