ARM: dts: dra7: update cpsw compatible

CPSW driver has been updated with compatibles for enabling errata
workarounds. So updating cpsw compatibles.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index 4a0718c..0001e95 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -1399,7 +1399,7 @@
 		};
 
 		mac: ethernet@4a100000 {
-			compatible = "ti,cpsw";
+			compatible = "ti,dra7-cpsw","ti,cpsw";
 			ti,hwmods = "gmac";
 			clocks = <&dpll_gmac_ck>, <&gmac_gmii_ref_clk_div>;
 			clock-names = "fck", "cpts";