[POWERPC] QE: get rid of most device_types and model

Now we're searching for "fsl,qe", "fsl,qe-muram", "fsl,qe-muram-data"
and "fsl,qe-ic".

Unfortunately it's still impossible to remove device_type = "qe"
from the existing device trees because older u-boots are looking for it.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Documentation/powerpc/booting-without-of.txt

@@ -1543,7 +1543,7 @@ platforms are moved over to use the flattened-device-tree model.
    i) Root QE device
 
    Required properties:
-   - device_type : should be "qe";
+   - compatible : should be "fsl,qe";
    - model : precise model of the QE, Can be "QE", "CPM", or "CPM2"
    - reg : offset and length of the device registers.
    - bus-frequency : the clock frequency for QUICC Engine.
@@ -1557,8 +1557,7 @@ platforms are moved over to use the flattened-device-tree model.
 		#address-cells = <1>;
 		#size-cells = <1>;
 		#interrupt-cells = <2>;
-		device_type = "qe";
-		model = "QE";
+		compatible = "fsl,qe";
 		ranges = <0 e0100000 00100000>;
 		reg = <e0100000 480>;
 		brg-frequency = <0>;
@@ -1781,7 +1780,7 @@ platforms are moved over to use the flattened-device-tree model.
    vii) Multi-User RAM (MURAM)
 
    Required properties:
-   - device_type : should be "muram".
+   - compatible : should be "fsl,qe-muram", "fsl,cpm-muram".
    - mode : the could be "host" or "slave".
    - ranges : Should be defined as specified in 1) to describe the
       translation of MURAM addresses.
@@ -1791,10 +1790,12 @@ platforms are moved over to use the flattened-device-tree model.
    Example:
 
 	muram@10000 {
-		device_type = "muram";
+		compatible = "fsl,qe-muram", "fsl,cpm-muram";
 		ranges = <0 00010000 0000c000>;
 
 		data-only@0{
+			compatible = "fsl,qe-muram-data",
+				     "fsl,cpm-muram-data";
 			reg = <0 c000>;
 		};
 	};