ARM: dts: s5pv210: correct ethernet unit address in SMDKV210

The SROM bank 5 is at address 0xa8000000, just like the one put in "reg"
property of ethernet node.  Fix the unit address of ethernet node.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200907183313.29234-2-krzk@kernel.org

arch/arm/boot/dts/s5pv210-smdkv210.dts

@@ -39,7 +39,7 @@ pmic_ap_clk: clock-0 {
 		clock-frequency = <32768>;
 	};
 
-	ethernet@18000000 {
+	ethernet@a8000000 {
 		compatible = "davicom,dm9000";
 		reg = <0xA8000000 0x2 0xA8000002 0x2>;
 		interrupt-parent = <&gph1>;