MAINTAINERS: Add entry for NXP PTN5150A CC driver

Add Krzysztof Kozlowski as maintainer of NXP PTN5150A CC/extcon driver
to provide review, feedback and testing.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Vijai Kumar K <[e-mail]>
Signed-off-by: Chanwoo Choi <[e-mail]>

MAINTAINERS

···
 F:	drivers/iio/gyro/fxas21002c_i2c.c
 F:	drivers/iio/gyro/fxas21002c_spi.c
 
+NXP PTN5150A CC LOGIC AND EXTCON DRIVER
+M:	Krzysztof Kozlowski <[e-mail]>
+L:	[e-mail]
+S:	Maintained
+F:	Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
+F:	drivers/extcon/extcon-ptn5150.c
+
 NXP SGTL5000 DRIVER
 M:	Fabio Estevam <[e-mail]>
 L:	[e-mail] (moderated for non-subscribers)