riscv: dts: spacemit: move aliases to board dts

aliases info should belong to board dts, instead of
putting it at SoC dtsi file.

Fixes: d8fe646 ("riscv: dts: add initial SpacemiT K1 SoC device tree")
Link: https://lore.kernel.org/all/6a8bb914-858e-479d-a7d9-09e0ff688160@app.fastmail.com
Signed-off-by: Yixun Lan <dlan@gentoo.org>

Author: dlan17

arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts

@@ -10,6 +10,10 @@
 	model = "Banana Pi BPI-F3";
 	compatible = "bananapi,bpi-f3", "spacemit,k1";
 
+	aliases {
+		serial0 = &uart0;
+	};
+
 	chosen {
 		stdout-path = "serial0";
 	};

arch/riscv/boot/dts/spacemit/k1.dtsi

@@ -10,18 +10,6 @@
 	model = "SpacemiT K1";
 	compatible = "spacemit,k1";
 
-	aliases {
-		serial0 = &uart0;
-		serial1 = &uart2;
-		serial2 = &uart3;
-		serial3 = &uart4;
-		serial4 = &uart5;
-		serial5 = &uart6;
-		serial6 = &uart7;
-		serial7 = &uart8;
-		serial8 = &uart9;
-	};
-
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;