dt-bindings: mfd: da9055: Fix dead link to codec binding

The simple audio codec bindings were consolidated into
trivial-codec.yaml by commit 4acbfcf ("ASoC: dt-bindings:
consolidate simple audio codec to trivial-codec.yaml").

Update the DA9055 binding documentation to reference the new
trivial-codec.yaml location.

Signed-off-by: Soham Metha <sohammetha01@gmail.com>
Link: https://patch.msgid.link/20260126111309.22097-1-sohammetha01@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: Soham-Metha

Documentation/devicetree/bindings/mfd/da9055.txt

@@ -15,7 +15,7 @@ The CODEC device in DA9055 has a separate, configurable I2C address and so
 is instantiated separately from the PMIC.
 
 For details on accompanying CODEC I2C device, see the following:
-Documentation/devicetree/bindings/sound/da9055.txt
+Documentation/devicetree/bindings/sound/trivial-codec.yaml
 
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