dts: bindings: Add NXP NETC PTP binding

Add binding for NXP NETC PTP Clock device

Signed-off-by: Qiang Zhao <qiang.zhao@nxp.com>

dts/bindings/ethernet/nxp,netc-ptp-clock.yaml

diff --git a/dts/bindings/ethernet/nxp,netc-ptp-clock.yaml b/dts/bindings/ethernet/nxp,netc-ptp-clock.yaml
new file mode 100644
index 0000000..614d549
--- /dev/null
+++ b/dts/bindings/ethernet/nxp,netc-ptp-clock.yaml
@@ -0,0 +1,12 @@
+# Copyright 2025 NXP
+# SPDX-License-Identifier: Apache-2.0
+
+description: NXP NETC PTP (Precision Time Protocol) Clock
+
+compatible: "nxp,netc-ptp-clock"
+
+include: ["base.yaml"]
+
+properties:
+  reg:
+    required: true