powerpc/8xx: Add DT node for using the SEC engine of the MPC885

The MPC885 has SEC engine version 1.2 with the following details:
- Number of Crypto channels: 1
- Exec Units: DEU, MDEU and AESU
- Available descriptors: 00010, 00100, 00110, 01000, 11000, 11010

It is also supposed to have descriptor 00000, but it doesn't work
properly so we keep it out for the moment.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>

arch/powerpc/boot/dts/mpc885ads.dts

@@ -72,7 +72,7 @@ soc@ff000000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		device_type = "soc";
-		ranges = <0x0 0xff000000 0x4000>;
+		ranges = <0x0 0xff000000 0x28000>;
 		bus-frequency = <0>;
 
 		// Temporary -- will go away once kernel uses ranges for get_immrbase().
@@ -224,6 +224,17 @@ i2c@860 {
 				#size-cells = <0>;
 			};
 		};
+
+		crypto@20000 {
+			compatible = "fsl,sec1.2", "fsl,sec1.0";
+			reg = <0x20000 0x8000>;
+			interrupts = <1 1>;
+			interrupt-parent = <&PIC>;
+			fsl,num-channels = <1>;
+			fsl,channel-fifo-len = <24>;
+			fsl,exec-units-mask = <0x4c>;
+			fsl,descriptor-types-mask = <0x05000154>;
+		};
 	};
 
 	chosen {