dt-bindings: memory: Add entry for version 3.80a

Add an entry for version 3.80a of the Synopsys DDR controller.
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lkml.kernel.org/r/20211012190709.1504152-4-dinguyen@kernel.org

Documentation/devicetree/bindings/memory-controllers/synopsys,ddrc-ecc.yaml

@@ -26,6 +26,7 @@ properties:
     enum:
       - xlnx,zynq-ddrc-a05
       - xlnx,zynqmp-ddrc-2.40a
+      - snps,ddrc-3.80a
 
   interrupts:
     maxItems: 1