ARM: tegra: Specify memory suspend OPP in device-tree

Specify memory suspend OPP in a device-tree, just for consistency.
Now memory will always suspend on the same frequency.

Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30
Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30
Tested-by: Dmitry Osipenko <digetx@gmail.com> # A500 T20 and Nexus7 T30
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra124-peripherals-opp.dtsi

@@ -128,24 +128,28 @@ opp@204000000,800 {
 			opp-microvolt = <800000 800000 1150000>;
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x0003>;
+			opp-suspend;
 		};
 
 		opp@204000000,950 {
 			opp-microvolt = <950000 950000 1150000>;
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x0008>;
+			opp-suspend;
 		};
 
 		opp@204000000,1050 {
 			opp-microvolt = <1050000 1050000 1150000>;
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x0010>;
+			opp-suspend;
 		};
 
 		opp@204000000,1110 {
 			opp-microvolt = <1110000 1110000 1150000>;
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x0004>;
+			opp-suspend;
 		};
 
 		opp@264000000,800 {
@@ -360,6 +364,7 @@ opp@204000000 {
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x001F>;
 			opp-peak-kBps = <3264000>;
+			opp-suspend;
 		};
 
 		opp@264000000 {

arch/arm/boot/dts/tegra20-peripherals-opp.dtsi

@@ -68,6 +68,7 @@ opp@216000000 {
 			opp-microvolt = <1000000 1000000 1300000>;
 			opp-hz = /bits/ 64 <216000000>;
 			opp-supported-hw = <0x000F>;
+			opp-suspend;
 		};
 
 		opp@300000000 {

arch/arm/boot/dts/tegra30-peripherals-opp.dtsi

@@ -128,12 +128,14 @@ opp@204000000,1000 {
 			opp-microvolt = <1000000 1000000 1350000>;
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x0007>;
+			opp-suspend;
 		};
 
 		opp@204000000,1250 {
 			opp-microvolt = <1250000 1250000 1350000>;
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x0008>;
+			opp-suspend;
 		};
 
 		opp@333500000,1000 {
@@ -312,6 +314,7 @@ opp@204000000 {
 			opp-hz = /bits/ 64 <204000000>;
 			opp-supported-hw = <0x000F>;
 			opp-peak-kBps = <1632000>;
+			opp-suspend;
 		};
 
 		opp@333500000 {