dt-bindings: remoteproc: qcom,adsp: bring back firmware-name

The firmware-name property was moved from common qcom,pas-common.yaml
binding to each device-specific schema, but the qcom,adsp.yaml was not
updated.

Fixes: cee616c ("dt-bindings: remoteproc: qcom: adsp: move memory-region and firmware-name out of pas-common")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230713072242.11268-5-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: krzk

Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml

@@ -44,6 +44,10 @@ properties:
     maxItems: 1
     description: Reference to the reserved-memory for the Hexagon core
 
+  firmware-name:
+    maxItems: 1
+    description: Firmware name for the Hexagon core
+
 required:
   - compatible
   - memory-region