dt-bindings: rtc: move nxp,lpc3220-rtc to separated file from trivial-rtc.yaml

nxp,lpc3220-rtc have clocks property, so move it from trivial-rtc.yaml.

Signed-off-by: Frank Li <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Alexandre Belloni <[e-mail]>

Documentation/devicetree/bindings/rtc/nxp,lpc3220-rtc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/nxp,lpc3220-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP LPC32xx SoC Real-time Clock
+
+maintainers:
+  - Frank Li <[e-mail]>
+
+properties:
+  compatible:
+    enum:
+      - nxp,lpc3220-rtc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  start-year: true
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: rtc.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/lpc32xx-clock.h>
+
+    rtc@40024000 {
+        compatible = "nxp,lpc3220-rtc";
+        reg = <0x40024000 0x1000>;
+        interrupt-parent = <&sic1>;
+        interrupts = <20 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk LPC32XX_CLK_RTC>;
+    };
+

Documentation/devicetree/bindings/rtc/trivial-rtc.yaml

···
       - microcrystal,rv3029
       # Real Time Clock
       - microcrystal,rv8523
-      # NXP LPC32xx SoC Real-time Clock
-      - nxp,lpc3220-rtc
       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
       - ricoh,r2025sd
       # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC