ARM: dts: rmobile: Make scif0 available before reloc on Porter

Make the SCIF available before relocation and in SPL on R8A7791 Porter.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/arm/dts/r8a7791-porter.dts b/arch/arm/dts/r8a7791-porter.dts
index bc93bb2..3d47daa 100644
--- a/arch/arm/dts/r8a7791-porter.dts
+++ b/arch/arm/dts/r8a7791-porter.dts
@@ -214,6 +214,7 @@
 &scif0 {
 	pinctrl-0 = <&scif0_pins>;
 	pinctrl-names = "default";
+	u-boot,dm-pre-reloc;
 
 	status = "okay";
 };