powerpc/dts/fsl: Fix dtc-flagged interrupt errors

mpc8641_hpcn was updated to 4-cell interrupt specifiers, but
PCI interrupt-map was not updated.  It was also missing #interrupt-cells
on the outer PCI buses.

p1020rdb-pc was updated to 4-cell interrupt specifiers, but
the ethernet-phy nodes weren't updated.

mpc832x_rdb had an invalid "interrupts = <0>" on the ethernet-phy nodes.
Besides being the wrong number of cells, 0 is not a valid IPIC interrupt
according to ipic.c.  Presumably it was meant to indicate that these
PHYs are not connected to an interrupt.

Signed-off-by: Scott Wood <oss@buserror.net>

arch/powerpc/boot/dts/mpc832x_rdb.dts

@@ -311,13 +311,9 @@
 			compatible = "fsl,ucc-mdio";
 
 			phy00:ethernet-phy@0 {
-				interrupt-parent = <&ipic>;
-				interrupts = <0>;
 				reg = <0x0>;
 			};
 			phy04:ethernet-phy@4 {
-				interrupt-parent = <&ipic>;
-				interrupts = <0>;
 				reg = <0x4>;
 			};
 		};