arm64: dts: imx8mq: increase NOC clock to 800 MHz

The NOC clock defaults to 400 MHz. Increase it to 800 MHz for improved
memory performance.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -519,6 +519,8 @@ clk: clock-controller@30380000 {
 				clock-names = "ckil", "osc_25m", "osc_27m",
 				              "clk_ext1", "clk_ext2",
 				              "clk_ext3", "clk_ext4";
+				assigned-clocks = <&clk IMX8MQ_CLK_NOC>;
+				assigned-clock-rates = <800000000>;
 			};
 
 			src: reset-controller@30390000 {