dt-bindings: mediatek: add description for mt8192 display

add description for mt8192 display
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt

@@ -43,7 +43,7 @@ Required properties (all function blocks):
 	"mediatek,<chip>-dpi"        		- DPI controller, see mediatek,dpi.txt
 	"mediatek,<chip>-disp-mutex" 		- display mutex
 	"mediatek,<chip>-disp-od"    		- overdrive
-  the supported chips are mt2701, mt7623, mt2712, mt8167, mt8173 and mt8183.
+  the supported chips are mt2701, mt7623, mt2712, mt8167, mt8173, mt8183 and mt8192.
 - reg: Physical base address and length of the function block register space
 - interrupts: The interrupt signal from the function block (required, except for
   merge and split function blocks).