ARM: dts: tegra20: paz00: Add memory timings

PAZ00 board has two variants of DDR2 SDRAM devices for External Memory:
one is Hynix HY5PS1G831CLFP-Y5 and the other is Micron MT47H128M8CF-25:H.
The Micron variant doesn't have official timings in the wild, hence only
timings for the Hynix are added. The memory frequency-scaling was tested
using the Tegra20 devfreq driver.
Tested-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra20-paz00.dts

@@ -311,6 +311,52 @@ nvec@7000c500 {
 		reset-names = "i2c";
 	};
 
+	memory-controller@7000f400 {
+		nvidia,use-ram-code;
+
+		emc-tables@hynix {
+			nvidia,ram-code = <0x0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			emc-table@166500 {
+				reg = <166500>;
+				compatible = "nvidia,tegra20-emc-table";
+				clock-frequency = <166500>;
+				nvidia,emc-registers = <0x0000000a 0x00000016
+					0x00000008 0x00000003 0x00000004 0x00000004
+					0x00000002 0x0000000c 0x00000003 0x00000003
+					0x00000002 0x00000001 0x00000004 0x00000005
+					0x00000004 0x00000009 0x0000000d 0x000004df
+					0x00000000 0x00000003 0x00000003 0x00000003
+					0x00000003 0x00000001 0x0000000a 0x000000c8
+					0x00000003 0x00000006 0x00000004 0x00000008
+					0x00000002 0x00000000 0x00000000 0x00000002
+					0x00000000 0x00000000 0x00000083 0xe03b0323
+					0x007fe010 0x00001414 0x00000000 0x00000000
+					0x00000000 0x00000000 0x00000000 0x00000000>;
+			};
+
+			emc-table@333000 {
+				reg = <333000>;
+				compatible = "nvidia,tegra20-emc-table";
+				clock-frequency = <333000>;
+				nvidia,emc-registers = <0x00000018 0x00000033
+					0x00000012 0x00000004 0x00000004 0x00000005
+					0x00000003 0x0000000c 0x00000006 0x00000006
+					0x00000003 0x00000001 0x00000004 0x00000005
+					0x00000004 0x00000009 0x0000000d 0x00000bff
+					0x00000000 0x00000003 0x00000003 0x00000006
+					0x00000006 0x00000001 0x00000011 0x000000c8
+					0x00000003 0x0000000e 0x00000007 0x00000008
+					0x00000002 0x00000000 0x00000000 0x00000002
+					0x00000000 0x00000000 0x00000083 0xf0440303
+					0x007fe010 0x00001414 0x00000000 0x00000000
+					0x00000000 0x00000000 0x00000000 0x00000000>;
+			};
+		};
+	};
+
 	i2c@7000d000 {
 		status = "okay";
 		clock-frequency = <400000>;