ARM: dts: aspeed: tacoma: Add UART1 and workaround

The UARTs on the AST2600 A0 have a known issue that can be worked around
by using the Synopsys driver.
Tested-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts

@@ -10,10 +10,6 @@ / {
 	model = "Tacoma";
 	compatible = "ibm,tacoma-bmc", "aspeed,ast2600";
 
-	aliases {
-		serial4 = &uart5;
-	};
-
 	chosen {
 		stdout-path = &uart5;
 		bootargs = "console=ttyS4,115200n8";
@@ -542,6 +538,17 @@ &ibt {
 	status = "okay";
 };
 
+&uart1 {
+	status = "okay";
+	// Workaround for A0
+	compatible = "snps,dw-apb-uart";
+};
+
+&uart5 {
+	// Workaround for A0
+	compatible = "snps,dw-apb-uart";
+};
+
 &vuart1 {
 	status = "okay";
 };