dt-bindings: clk: vc5: Make SD/OE pin configuration properties not required

"make dtbs_check":

    arch/arm64/boot/dts/renesas/r8a77951-salvator-xs.dtb: clock-generator@6a: 'idt,shutdown' is a required property
	    From schema: Documentation/devicetree/bindings/clock/idt,versaclock5.yaml
    arch/arm64/boot/dts/renesas/r8a77951-salvator-xs.dtb: clock-generator@6a: 'idt,output-enable-active' is a required property
	    From schema: Documentation/devicetree/bindings/clock/idt,versaclock5.yaml

Versaclock 5 clock generators can have their configuration stored in
One-Time Programmable (OTP) memory.  Hence there is no need to specify
DT properties for manual configuration if the OTP has been programmed
before.  Likewise, the Linux driver does not touch the SD/OE bits if the
corresponding properties are not specified, cfr. commit d83e561
("clk: vc5: Add properties for configuring SD/OE behavior").

Reflect this in the bindings by making the "idt,shutdown" and
"idt,output-enable-active" properties not required, just like the
various "idt,*" properties in the per-output child nodes.

Fixes: 275e4e2 ("dt-bindings: clk: vc5: Add properties for configuring the SD/OE pin")
Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Luca Ceresoli <[email protected]>
Link: https://lore.kernel.org/r/68037ad181991fe0b792f6d003e3e9e538d5ffd7.1673452118.git.geert+renesas@glider.be
Signed-off-by: Rob Herring (Arm) <[email protected]>

Author: geertu

Documentation/devicetree/bindings/clock/idt,versaclock5.yaml

@@ -126,8 +126,6 @@ required:
   - compatible
   - reg
   - '#clock-cells'
-  - idt,shutdown
-  - idt,output-enable-active
 
 allOf:
   - if: