arm64: dts: stratix10: Add SDRAM node

Add the SDRAM node to follow the Arria10 layout and bindings. The
Arria10 SDRAM functions expect this node.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: robh+dt@kernel.org
Cc: mark.rutland@arm.com
Cc: mchehab@kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-edac@vger.kernel.org
Link: https://lkml.kernel.org/r/1537883342-30180-4-git-send-email-thor.thayer@linux.intel.com

arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi

@@ -467,6 +467,11 @@
 			status = "disabled";
 		};
 
+		sdr: sdr@f8011100 {
+			compatible = "altr,sdr-ctl", "syscon";
+			reg = <0xf8011100 0xc0>;
+		};
+
 		eccmgr {
 			compatible = "altr,socfpga-s10-ecc-manager";
 			altr,sysmgr-syscon = <&sysmgr>;
@@ -479,6 +484,7 @@
 
 			sdramedac {
 				compatible = "altr,sdram-edac-s10";
+				altr,sdr-syscon = <&sdr>;
 				interrupts = <16 4>, <48 4>;
 			};
 		};