Move release notes to clang

Author: Stylie777

clang/docs/ReleaseNotes.rst

@@ -419,6 +419,9 @@ Bug Fixes to Attribute Support
 - No longer crashing on ``__attribute__((align_value(N)))`` during template
   instantiation when the function parameter type is not a pointer or reference.
   (#GH26612)
+- The ``+nosimd`` attribute is now fully supported. Previously, this had no effect when being used with
+  AArch32 targets, however this will now disable NEON instructions being generated. The ``simd`` option is 
+  also now printed when the ``--print-supported-extensions`` option is used.
 
 Bug Fixes to C++ Support
 ^^^^^^^^^^^^^^^^^^^^^^^^

llvm/docs/ReleaseNotes.md

@@ -96,9 +96,6 @@ Changes to the AMDGPU Backend
 
 Changes to the ARM Backend
 --------------------------
-* The `+nosimd` attribute is now fully supported. Previously, this had no effect when being used with
-AArch32 targets, however this will now disable NEON instructions being generated. The `simd` option is 
-also now printed when the `--print-supported-extensions` option is used.
 
 Changes to the AVR Backend
 --------------------------