MAINTAINERS: Add fragment for Xilinx watchdog driver

Added entry for Xilinx xps-timebase watchdog driver.

Signed-off-by: Srinivas Neeli <srinivas.neeli@amd.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230420104231.2243079-2-srinivas.neeli@amd.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: srneeli

MAINTAINERS

@@ -22969,6 +22969,14 @@ F:	Documentation/devicetree/bindings/media/xilinx/
 F:	drivers/media/platform/xilinx/
 F:	include/uapi/linux/xilinx-v4l2-controls.h
 
+XILINX WATCHDOG DRIVER
+M:	Srinivas Neeli <srinivas.neeli@amd.com>
+R:	Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
+R:	Michal Simek <michal.simek@amd.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/watchdog/xlnx,xps-timebase-wdt.yaml
+F:	drivers/watchdog/of_xilinx_wdt.c
+
 XILINX XDMA DRIVER
 M:	Lizhi Hou <lizhi.hou@amd.com>
 M:	Brian Xu <brian.xu@amd.com>