arm64: dts: imx8mq: Add opp-suspend property to OPP table

Add opp-suspend property to each OPP, the of opp core will
select the OPP HW supported and with highest rate to be
suspend opp, it will speed up the suspend/resume process.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -156,6 +156,7 @@ opp-800000000 {
 			/* Industrial only */
 			opp-supported-hw = <0xf>, <0x4>;
 			clock-latency-ns = <150000>;
+			opp-suspend;
 		};
 
 		opp-1000000000 {
@@ -164,6 +165,7 @@ opp-1000000000 {
 			/* Consumer only */
 			opp-supported-hw = <0xe>, <0x3>;
 			clock-latency-ns = <150000>;
+			opp-suspend;
 		};
 
 		opp-1300000000 {
@@ -171,6 +173,7 @@ opp-1300000000 {
 			opp-microvolt = <1000000>;
 			opp-supported-hw = <0xc>, <0x4>;
 			clock-latency-ns = <150000>;
+			opp-suspend;
 		};
 
 		opp-1500000000 {
@@ -178,6 +181,7 @@ opp-1500000000 {
 			opp-microvolt = <1000000>;
 			opp-supported-hw = <0x8>, <0x3>;
 			clock-latency-ns = <150000>;
+			opp-suspend;
 		};
 	};