video: seps525: Add dt binding description

Added dt binding for seps525 display driver.

Signed-off-by: Vikhyat Goyal <vikhyat.goyal@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 52d7307..8e2ccc2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -548,6 +548,7 @@
 T:	git https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze.git
 F:	arch/arm/mach-zynq/
 F:	doc/board/xilinx/
+F:	doc/device-tree-bindings/video/syncoam,seps525.txt
 F:	drivers/clk/clk_zynq.c
 F:	drivers/fpga/zynqpl.c
 F:	drivers/gpio/zynq_gpio.c