[POWERPC] Small fixes for the Ebony device tree

This patch corrects a number of minor errors in the Ebony device tree:
- Missing (given as 0) cache sizes are added to the CPU node
- device_type properties are removed from nodes which don't
have a reasonably well defined device_type binding. This does require
a very small code change to locate the busses to be probed for
of_platform devices by 'compatible' instead of 'device_type'.
- A node is added for the SRAM controller
- The unit address of the small-flash node is adjusted to
correctly reflect the reg property.
- device_type values for the MAL and ZMII are updated to
reflected more up-to-date versions of the binding.
- An incorrect offset in the partition map for the large-flash
node is corrected.
- Some redundant values, already commented out are removed
entirely.

Signed-off-by: David Gibson <[e-mail]>
Signed-off-by: Paul Mackerras <[e-mail]>

arch/powerpc/boot/dts/ebony.dts

···
 			timebase-frequency = <0>; // Filled in by zImage
 			i-cache-line-size = <32>;
 			d-cache-line-size = <32>;
-			i-cache-size = <0>;
-			d-cache-size = <0>;
+			i-cache-size = <8000>; /* 32 kB */
+			d-cache-size = <8000>; /* 32 kB */
 			dcr-controller;
 			dcr-access-method = "native";
 		};
···
 	};
 
 	UIC0: interrupt-controller0 {
-		device_type = "ibm,uic";
 		compatible = "ibm,uic-440gp", "ibm,uic";
 		interrupt-controller;
 		cell-index = <0>;
···
 	};
 
 	UIC1: interrupt-controller1 {
-		device_type = "ibm,uic";
 		compatible = "ibm,uic-440gp", "ibm,uic";
 		interrupt-controller;
 		cell-index = <1>;
···
 	};
 
 	CPC0: cpc {
-		device_type = "ibm,cpc";
 		compatible = "ibm,cpc-440gp";
 		dcr-reg = <0b0 003 0e0 010>;
 		// FIXME: anything else?
 	};
 
 	plb {
-		device_type = "ibm,plb";
 		compatible = "ibm,plb-440gp", "ibm,plb4";
 		#address-cells = <2>;
 		#size-cells = <1>;
 		ranges;
 		clock-frequency = <0>; // Filled in by zImage
 
-		SDRAM0: sdram {
-			device_type = "memory-controller";
-			compatible = "ibm,sdram-440gp", "ibm,sdram";
+		SDRAM0: memory-controller {
+			compatible = "ibm,sdram-440gp";
 			dcr-reg = <010 2>;
 			// FIXME: anything else?
 		};
 
+		SRAM0: sram {
+			compatible = "ibm,sram-440gp";
+			dcr-reg = <020 8 00a 1>;
+		};
+
 		DMA0: dma {
 			// FIXME: ???
-			device_type = "ibm,dma-4xx";
-			compatible = "ibm,dma-440gp", "ibm,dma-4xx";
+			compatible = "ibm,dma-440gp";
 			dcr-reg = <100 027>;
 		};
 
 		MAL0: mcmal {
-			device_type = "mcmal-dma";
 			compatible = "ibm,mcmal-440gp", "ibm,mcmal";
 			dcr-reg = <180 62>;
 			num-tx-chans = <4>;
···
 		};
 
 		POB0: opb {
-			device_type = "ibm,opb";
 			compatible = "ibm,opb-440gp", "ibm,opb";
 			#address-cells = <1>;
 			#size-cells = <1>;
···
 			clock-frequency = <0>; // Filled in by zImage
 
 			EBC0: ebc {
-				device_type = "ibm,ebc";
-				compatible = "ibm,ebc-440gp";
+				compatible = "ibm,ebc-440gp", "ibm,ebc";
 				dcr-reg = <012 2>;
 				#address-cells = <2>;
 				#size-cells = <1>;
···
 				interrupts = <5 4>;
 				interrupt-parent = <&UIC1>;
 
-				small-flash@0,0 {
+				small-flash@0,80000 {
 					device_type = "rom";
 					compatible = "direct-mapped";
 					probe-type = "JEDEC";
···
 
 				ds1743@1,0 {
 					/* NVRAM & RTC */
-					device_type = "nvram";
 					compatible = "ds1743";
 					reg = <1 0 2000>;
 				};
···
 					probe-type = "JEDEC";
 					bank-width = <1>;
 					partitions = <0 380000
-						      280000 80000>;
+						      380000 80000>;
 					partition-names = "fs", "firmware";
 					reg = <2 0 400000>;
 				};
···
 
 			GPIO0: gpio@40000700 {
 				/* FIXME */
-				device_type = "gpio";
 				compatible = "ibm,gpio-440gp";
 				reg = <40000700 20>;
 			};
 
 			ZMII0: emac-zmii@40000780 {
-				device_type = "emac-zmii";
 				compatible = "ibm,zmii-440gp", "ibm,zmii";
 				reg = <40000780 c>;
 			};
···
 
 	chosen {
 		linux,stdout-path = "/plb/opb/serial@40000200";
-//		linux,initrd-start = <0>; /* FIXME */
-//		linux,initrd-end = <0>;
-//		bootargs = "";
 	};
 };
-

arch/powerpc/platforms/44x/ebony.c

···
 #include "44x.h"
 
 static struct of_device_id ebony_of_bus[] = {
-	{ .type = "ibm,plb", },
-	{ .type = "ibm,opb", },
-	{ .type = "ibm,ebc", },
+	{ .compatible = "ibm,plb4", },
+	{ .compatible = "ibm,opb", },
+	{ .compatible = "ibm,ebc", },
 	{},
 };