ARM: dts: rmobile: Make PFC and RST available before reloc

Those two nodes are needed to configure pinmux before relocation
and to configure clock before relocation, since CPG/MSSR needs
access to RST node. This is not noticable on Gen3, but on Gen2
this causes problems in SPL if they are not available early.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

arch/arm/dts/r8a779x-u-boot.dtsi

@@ -20,6 +20,14 @@
 	u-boot,dm-pre-reloc;
 };
 
+&pfc {
+	u-boot,dm-pre-reloc;
+};
+
 &prr {
 	u-boot,dm-pre-reloc;
 };
+
+&rst {
+	u-boot,dm-pre-reloc;
+};