dts: bindings: arm: YAML description for Zynq OCM

YAML description file for the On-Chip Memory of the Xilinx
Zynq-7000, DT identifier "xlnx,zynq-ocm".

Signed-off-by: Immo Birnbaum <Immo.Birnbaum@weidmueller.com>
diff --git a/dts/bindings/arm/xlnx,zynq-ocm.yaml b/dts/bindings/arm/xlnx,zynq-ocm.yaml
new file mode 100644
index 0000000..e88b7d1
--- /dev/null
+++ b/dts/bindings/arm/xlnx,zynq-ocm.yaml
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: Apache-2.0
+
+description: Xilinx Zynq OCM (On-Chip Memory)
+
+compatible: "xlnx,zynq-ocm"
+
+include: [base.yaml, mem-region.yaml]
+
+properties:
+    reg:
+      required: true