ipq806x: really fix aliases node for Qualcomm IPQ8064/DB149

Having looked at this again, it appears that only gsbi2_serial
is actually enabled for this device, so the entry in the broken
aliases node was correct.

Therefore, this needs to set its own serial0 instead of inheriting
"serial0 = &gsbi4_serial;" from DTSI. Do this with the correctly
named aliases node now.

Fixes: c83f7b6d21 ("ipq806x: fix aliases node name for Qualcomm
IPQ8064/DB149")

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064-db149.dts

@@ -4,6 +4,10 @@
 	model = "Qualcomm IPQ8064/DB149";
 	compatible = "qcom,ipq8064-db149", "qcom,ipq8064";
 
+	aliases {
+		serial0 = &gsbi2_serial;
+	};
+
 	reserved-memory {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -56,7 +60,8 @@
 		gsbi2: gsbi@12480000 {
 			qcom,mode = <GSBI_PROT_I2C_UART>;
 			status = "okay";
-			uart2: serial@12490000 {
+
+			gsbi2_serial: serial@12490000 {
 				status = "okay";
 			};
 		};

target/linux/ipq806x/files-5.4/arch/arm/boot/dts/qcom-ipq8064-db149.dts

@@ -4,6 +4,10 @@
 	model = "Qualcomm IPQ8064/DB149";
 	compatible = "qcom,ipq8064-db149", "qcom,ipq8064";
 
+	aliases {
+		serial0 = &gsbi2_serial;
+	};
+
 	reserved-memory {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -28,7 +32,8 @@
 &gsbi2 {
 	qcom,mode = <GSBI_PROT_I2C_UART>;
 	status = "okay";
-	uart2: serial@12490000 {
+
+	gsbi2_serial: serial@12490000 {
 		status = "okay";
 	};
 };