MAINTAINERS: add Atmel PTC entries

Add entries for the Atmel PTC Subsystem.

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>

Author: ldesroches

MAINTAINERS

@@ -2518,6 +2518,13 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/input/atmel,maxtouch.txt
 F:	drivers/input/touchscreen/atmel_mxt_ts.c
 
+ATMEL PTC SUBSYSTEM DRIVER
+M:	Ludovic Desroches <ludovic.desroches@microchip.com>
+L:	linux-input@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/input/atmel,ptc.txt
+F:	drivers/input/misc/atmel_ptc.c
+
 ATMEL SAMA5D2 ADC DRIVER
 M:	Ludovic Desroches <ludovic.desroches@microchip.com>
 L:	linux-iio@vger.kernel.org