dt-bindings: reference MC peripheral properties in relevant devices

Several devices can be attached to memory controllers (or memory-mapped
buses), thus they can come with additional controller-specific
properties, e.g. devices wired under Intel IXP4XX bus: cfi-flash,
intel,ixp4xx-compact-flash, NS8250 serial and MAX6369 watchdog.

Referencing Memory Controller or IXP4XX bus peripheral properties fixes
few dtbs_check warnings like:

intel-ixp42x-gateworks-gw2348.dtb: ide@1,0: Unevaluated properties are not allowed
('intel,ixp4xx-eb-ahb-split-transfers', 'intel,ixp4xx-eb-byte-access', ... ' were unexpected)

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Linus Walleij <[e-mail]>
Acked-by: Damien Le Moal <[e-mail]>
Acked-by: Greg Kroah-Hartman <[e-mail]>
Reviewed-by: Miquel Raynal <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Rob Herring <[e-mail]>

Documentation/devicetree/bindings/ata/intel,ixp4xx-compact-flash.yaml

···
 
 allOf:
   - $ref: pata-common.yaml#
+  - $ref: /schemas/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml#
 
 unevaluatedProperties: false
 

Documentation/devicetree/bindings/mtd/mtd-physmap.yaml

···
 
 allOf:
   - $ref: "mtd.yaml#"
+  - $ref: /schemas/memory-controllers/mc-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/serial/8250.yaml

···
 
 allOf:
   - $ref: serial.yaml#
+  - $ref: /schemas/memory-controllers/mc-peripheral-props.yaml#
   - if:
       anyOf:
         - required:

Documentation/devicetree/bindings/watchdog/maxim,max63xx.yaml

···
 
 allOf:
   - $ref: "watchdog.yaml#"
+  - $ref: /schemas/memory-controllers/mc-peripheral-props.yaml#
 
 maintainers:
   - Marc Zyngier <[e-mail]>