dts: common: yaml: Add partition file

This patch adds the yaml definition for flash partitions.

Signed-off-by: Andy Gross <andy.gross@linaro.org>

dts/common/yaml/partition.yaml

@@ -0,0 +1,43 @@
+---
+title: Flash Partitions
+id: fixed-partition
+version: 0.1
+
+description: >
+    This binding gives a base FLASH partition description
+
+properties:
+  - compatible:
+      type: string
+      category: required
+      description: compatible strings
+      constraint: "fixed-partitions"
+
+  - partition\d+:
+      type: string
+      generation: define
+
+      properties:
+        - reg:
+            type: array
+            description: partition offset and size from flash bank
+            generation: define
+            category: required
+            label: offset
+
+        - label:
+            type: string
+            description: Partition label
+            generation: define
+            category: required
+
+        - read-only:
+            type: boolean
+            category: optional
+            description: Denotes read only partition
+            generation: define
+
+base_label: FLASH_AREA
+use-property-label: yes
+
+...