products/adsp: Add BR2_EXTERNAL 2025.05-0.1.0 release

Signed-off-by: Philip Molloy <philip.molloy@analog.com>

Author: pamolloy

docs/products/adsp/index.rst

@@ -112,3 +112,5 @@ ADI repositories
       :git-adsp-ldr:`v1.0.2 <releases/tag/v1.0.2+>`
 - :git-lnxdsp-repo-manifest:`+`
 - :git-br2-external:`+`
+    - v2025.05:
+      :git-br2-external:`Release 0.1.0 <releases/tag/2025.05-0.1.0+>`