ARM: dts: rmobile: Move the u-boot,dm-pre-reloc into u-boot DTS on porter

Fix ommission where the u-boot,dm-pre-reloc DT bit was pulled into the
common DT, not the U-Boot specific DT part. Move it to U-Boot DT part.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/arm/dts/r8a7791-porter-u-boot.dts b/arch/arm/dts/r8a7791-porter-u-boot.dts
index 987d0e4..9220248 100644
--- a/arch/arm/dts/r8a7791-porter-u-boot.dts
+++ b/arch/arm/dts/r8a7791-porter-u-boot.dts
@@ -8,3 +8,7 @@
 
 #include "r8a7791-porter.dts"
 #include "r8a7791-u-boot.dtsi"
+
+&scif0 {
+	u-boot,dm-pre-reloc;
+};