ipq40xx: Properly set MAC addresses for the EAP1300

The code that was there was just taking whatever was left in the
registers, which was just wrong.  Set the addresses using the value from
the u-boot environment, the same way the OEM firmware does.

Signed-off-by: Corey Minyard <minyard@acm.org>
Link: openwrt/openwrt#15358
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: openwrt/openwrt#15402
Signed-off-by: Robert Marko <robimarko@gmail.com>

target/linux/ipq40xx/files/arch/arm/boot/dts/qcom-ipq4018-eap1300.dts

@@ -194,8 +194,13 @@
 				reg = <0x190000 0x1dc0000>;
 			};
 			partition9@1f50000 {
+				compatible = "u-boot,env";
 				label = "u-boot-env";
 				reg = <0x01f50000 0x00010000>;
+
+				macaddr_ubootenv_ethaddr: ethaddr {
+					#nvmem-cell-cells = <1>;
+				};
 			};
 			partition10@1f60000 {
 				label = "userconfig";
@@ -222,6 +227,8 @@
 &swport5 {
 	status = "okay";
 	label = "lan";
+	nvmem-cell-names = "mac-address";
+	nvmem-cells = <&macaddr_ubootenv_ethaddr 0>;
 };
 
 &gmac {
@@ -234,14 +241,14 @@
 
 &wifi0 {
 	status = "okay";
-	nvmem-cell-names = "pre-calibration";
-	nvmem-cells = <&precal_art_1000>;
+	nvmem-cell-names = "pre-calibration", "mac-address";
+	nvmem-cells = <&precal_art_1000>, <&macaddr_ubootenv_ethaddr 1>;
 	qcom,ath10k-calibration-variant = "EnGenius-EAP1300";
 };
 
 &wifi1 {
 	status = "okay";
-	nvmem-cell-names = "pre-calibration";
-	nvmem-cells = <&precal_art_5000>;
+	nvmem-cell-names = "pre-calibration", "mac-address";
+	nvmem-cells = <&precal_art_5000>, <&macaddr_ubootenv_ethaddr 2>;
 	qcom,ath10k-calibration-variant = "EnGenius-EAP1300";
 };