ARM: dts: am4372: Set memory bandwidth limit for DISPC

Set memory bandwidth limit to filter out resolutions above 720p@60Hz to
avoid underflow errors due to the bandwidth needs of higher resolutions.

am43xx can not provide enough bandwidth to DISPC to correctly handle
'high' resolutions.

Signed-off-by: Peter Ujfalusi <[email protected]>
Signed-off-by: Tomi Valkeinen <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>

Author: Peter Ujfalusi

arch/arm/boot/dts/am4372.dtsi

@@ -337,6 +337,8 @@
 				ti,hwmods = "dss_dispc";
 				clocks = <&disp_clk>;
 				clock-names = "fck";
+
+				max-memory-bandwidth = <230000000>;
 			};
 
 			rfbi: rfbi@4832a800 {