dts-bindings: video: addition of stm32 venc description

Addition of description for the STM32 Video encoder (VENC).

Signed-off-by: Hugues Fruchet <[email protected]>

Author: hfruchet-st

dts/bindings/video/st,stm32-venc.yaml

@@ -0,0 +1,27 @@
+#
+# Copyright (c) 2025 Hugues Fruchet <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+description: |
+    STMicroelectronics STM32 video encoder peripheral (VENC).
+    Example of node configuration at board level:
+
+    &venc {
+      status = "okay";
+    };
+
+compatible: "st,stm32-venc"
+
+include: [base.yaml, reset-device.yaml]
+
+properties:
+  interrupts:
+    required: true
+
+  clocks:
+    required: true
+
+  resets:
+    required: false