dt-bindings: display/ti: Simplify dma-coherent property
Common boolean properties need to be only allowed in the binding
(":true"), because their type is already defined by core DT schema.
Simplify dma-coherent property to match common syntax.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://patch.msgid.link/20251115122120.35315-4-krzk@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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