MAINTAINERS: add fragment for xilinx GPIO drivers

Added entry for xilinx GPIO drivers.

Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Acked-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/1605201148-4508-10-git-send-email-srinivas.neeli@xilinx.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

MAINTAINERS

@@ -19254,6 +19254,16 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/net/can/xilinx_can.txt
 F:	drivers/net/can/xilinx_can.c
 
+XILINX GPIO DRIVER
+M:	Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
+R:	Srinivas Neeli <srinivas.neeli@xilinx.com>
+R:	Michal Simek <michal.simek@xilinx.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/gpio/gpio-xilinx.txt
+F:	Documentation/devicetree/bindings/gpio/gpio-zynq.txt
+F:	drivers/gpio/gpio-xilinx.c
+F:	drivers/gpio/gpio-zynq.c
+
 XILINX SD-FEC IP CORES
 M:	Derek Kiernan <derek.kiernan@xilinx.com>
 M:	Dragan Cvetic <dragan.cvetic@xilinx.com>