ARM: socfpga: Make DRAM node available in SPL

The SPL can also parse the DRAM configuration node to figure out the
memory layout, make sure it is available.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
diff --git a/arch/arm/dts/socfpga_arria10_socdk.dtsi b/arch/arm/dts/socfpga_arria10_socdk.dtsi
index d7616dd..3f59f02 100644
--- a/arch/arm/dts/socfpga_arria10_socdk.dtsi
+++ b/arch/arm/dts/socfpga_arria10_socdk.dtsi
@@ -34,6 +34,7 @@
 		name = "memory";
 		device_type = "memory";
 		reg = <0x0 0x40000000>; /* 1GB */
+		u-boot,dm-pre-reloc;
 	};
 
 	a10leds {