dt-bindings: rtc: nxp,pcf8563: Absorb pcf85263/pcf85363 bindings

The NXP PCF85263/PCF85363 Real Time Clock is very similar to the NXP
PCF8563.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/e4f48d97f0e16d78a796f02b77ea3a0018904185.1623416431.git.geert+renesas@glider.beSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/rtc/nxp,pcf8563.yaml

@@ -17,8 +17,10 @@ properties:
     enum:
       - epson,rtc8564
       - microcrystal,rv8564
-      - nxp,pcf8563
       - nxp,pca8565
+      - nxp,pcf8563
+      - nxp,pcf85263
+      - nxp,pcf85363
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/rtc/pcf85363.txt

-NXP PCF85263/PCF85363 Real Time Clock
-============================
-
-Required properties:
-- compatible: Should contain "nxp,pcf85263" or "nxp,pcf85363".
-- reg: I2C address for chip.
-
-Optional properties:
-- interrupts: IRQ line for the RTC (not implemented).
-
-Example:
-
-pcf85363: pcf85363@51 {
-	compatible = "nxp,pcf85363";
-	reg = <0x51>;
-};
-