dt-bindings: Another pass removing cases of 'allOf' containing a '$ref'

Another pass at removing unnecessary use of 'allOf' with a '$ref'.

json-schema versions draft7 and earlier have a weird behavior in that
any keywords combined with a '$ref' are ignored (silently). The correct
form was to put a '$ref' under an 'allOf'. This behavior is now changed
in the 2019-09 json-schema spec and '$ref' can be mixed with other
keywords.

Cc: Krzysztof Kozlowski <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: Guenter Roeck <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Vignesh Raghavendra <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Kishon Vijay Abraham I <[email protected]>
Cc: Sebastian Reichel <[email protected]>
Cc: Mathieu Poirier <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Acked-by: Mark Brown <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Acked-By: Vinod Koul <[email protected]>
Acked-by: Lee Jones <[email protected]>
Acked-by: Marek BehĂșn <[email protected]>
Acked-by: Miquel Raynal <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Acked-by: Jakub Kicinski <[email protected]>
Acked-by: Bjorn Andersson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
20 files changed