MAINTAINERS: Update Tegra Video decoder DT binding file path

Tegra Video decoder device-tree binding was converted to yaml sometime
ago, but the path wasn't updated in the MAINTAINERS. Update the path.

Signed-off-by: Dmitry Osipenko <[email protected]>

Author: digetx

MAINTAINERS

@@ -12193,7 +12193,7 @@ L:	[email protected]
 L:	[email protected]
 S:	Maintained
 T:	git git://linuxtv.org/media_tree.git
-F:	Documentation/devicetree/bindings/media/nvidia,tegra-vde.txt
+F:	Documentation/devicetree/bindings/media/nvidia,tegra-vde.yaml
 F:	drivers/media/platform/nvidia/tegra-vde/
 
 MEDIA DRIVERS FOR RENESAS - CEU