template-haskell: Document assembler foreign file support

See #16180.

docs/users_guide/8.8.1-notes.rst

@@ -176,6 +176,8 @@ Template Haskell
 
 - Template Haskell now supports implicit parameters and recursive do.
 
+- Template Haskell splices can now embed assembler source (:ghc-ticket:`16180`)
+
 ``ghc-prim`` library
 ~~~~~~~~~~~~~~~~~~~~
 

libraries/template-haskell/changelog.md

@@ -42,6 +42,8 @@
 
   * Add `Lift` instances for `NonEmpty` and `Void`
 
+  * `addForeignFilePath` now support assembler sources (#16180).
+
 ## 2.14.0.0 *TBA*
 
   * Introduce an `addForeignFilePath` function, as well as a corresponding