ARM: dts: iwg22d: Use /dev/ttySC3 as debug console

The BSP release from iWave uses /dev/ttySC3 as debug console, this patch
renames the alias accordingly for compatibility.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts

@@ -16,13 +16,13 @@ / {
 	compatible = "iwave,g22d", "iwave,g22m", "renesas,r8a7745";
 
 	aliases {
-		serial0 = &scif4;
+		serial3 = &scif4;
 		ethernet0 = &avb;
 	};
 
 	chosen {
 		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
-		stdout-path = "serial0:115200n8";
+		stdout-path = "serial3:115200n8";
 	};
 
 	vccq_sdhi0: regulator-vccq-sdhi0 {