powerpc: add missing deo arch category to e500mc/e5500 dts

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/fsl/e500mc_power_isa.dtsi

@@ -53,6 +53,7 @@
 		power-isa-mmc;		// Memory Coherence
 		power-isa-scpm;		// Store Conditional Page Mobility
 		power-isa-wt;		// Wait
+		fsl,eref-deo;		// Data Cache Extended Operations
 		mmu-type = "power-embedded";
 	};
 };

arch/powerpc/boot/dts/fsl/e5500_power_isa.dtsi

@@ -54,6 +54,7 @@
 		power-isa-scpm;		// Store Conditional Page Mobility
 		power-isa-wt;		// Wait
 		power-isa-64;		// 64-bit
+		fsl,eref-deo;		// Data Cache Extended Operations
 		mmu-type = "power-embedded";
 	};
 };