ARM: at91: add uart aliases to sama5d3 dtsi

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by Boris BREZILLON <b.brezillon@overkiz.com>

arch/arm/boot/dts/sama5d3_uart.dtsi

@@ -12,6 +12,11 @@
 #include <dt-bindings/clk/at91.h>
 
 / {
+	aliases {
+		serial5 = &uart0;
+		serial6 = &uart1;
+	};
+
 	ahb {
 		apb {
 			pinctrl@fffff200 {