Add phy-connection-type to gianfar nodes

The TSEC/eTSEC automatically detect their PHY interface type, unless
the type is RGMII-ID (RGMII with internal delay).  In that situation,
it just detects RGMII.  In order to fix this, we need to pass in rgmii-id
if that is the connection type.

Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 0c24348..76733a3 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1250,6 +1250,12 @@
       network device.  This is used by the bootwrapper to interpret
       MAC addresses passed by the firmware when no information other
       than indices is available to associate an address with a device.
+    - phy-connection-type : a string naming the controller/PHY interface type,
+      i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id", "sgmii",
+      "tbi", or "rtbi".  This property is only really needed if the connection
+      is of type "rgmii-id", as all other connection types are detected by
+      hardware.
+
 
   Example:
 
diff --git a/arch/powerpc/boot/dts/mpc8641_hpcn.dts b/arch/powerpc/boot/dts/mpc8641_hpcn.dts
index db56a02..6a78a2b 100644
--- a/arch/powerpc/boot/dts/mpc8641_hpcn.dts
+++ b/arch/powerpc/boot/dts/mpc8641_hpcn.dts
@@ -131,6 +131,7 @@
 			interrupts = <1d 2 1e 2 22 2>;
 			interrupt-parent = <&mpic>;
 			phy-handle = <&phy0>;
+			phy-connection-type = "rgmii-id";
 		};
 
 		ethernet@25000 {
@@ -150,6 +151,7 @@
 			interrupts = <23 2 24 2 28 2>;
 			interrupt-parent = <&mpic>;
 			phy-handle = <&phy1>;
+			phy-connection-type = "rgmii-id";
 		};
 		
 		ethernet@26000 {
@@ -169,6 +171,7 @@
 			interrupts = <1F 2 20 2 21 2>;
 			interrupt-parent = <&mpic>;
 			phy-handle = <&phy2>;
+			phy-connection-type = "rgmii-id";
 		};
 
 		ethernet@27000 {
@@ -188,6 +191,7 @@
 			interrupts = <25 2 26 2 27 2>;
 			interrupt-parent = <&mpic>;
 			phy-handle = <&phy3>;
+			phy-connection-type = "rgmii-id";
 		};
 		serial@4500 {
 			device_type = "serial";