ARM64: zynqmp: DT: Fix UART compatible string

ZynqMP has r1p12 not r1p8. r1p12 contains break detection support.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynqmp.dtsi

@@ -520,7 +520,7 @@
 		};
 
 		uart0: serial@ff000000 {
-			compatible = "cdns,uart-r1p8";
+			compatible = "cdns,uart-r1p12";
 			status = "disabled";
 			interrupt-parent = <&gic>;
 			interrupts = <0 21 4>;
@@ -529,7 +529,7 @@
 		};
 
 		uart1: serial@ff010000 {
-			compatible = "cdns,uart-r1p8";
+			compatible = "cdns,uart-r1p12";
 			status = "disabled";
 			interrupt-parent = <&gic>;
 			interrupts = <0 22 4>;