[xen staging] CHANGELOG: Notes about distro changes in CI

[patchbot@xxxxxxx]

commit 09de61c200c0b5c7d615e135434a5e187f9a8349
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Wed Sep 10 23:17:42 2025 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Sat Sep 13 01:02:29 2025 +0100

    CHANGELOG: Notes about distro changes in CI
    
    Also state the RISC-V baseline now it's been set, as it's the reason why
    RISC-V Bullseye got dropped.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
    Reviewed-by: Denis Mukhin <dmukhin@xxxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    ---
    CC: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    CC: Michal Orzel <michal.orzel@xxxxxxx>
    CC: Jan Beulich <jbeulich@xxxxxxxx>
    CC: Julien Grall <julien@xxxxxxx>
    CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    CC: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
    
    v2:
     * New
---
 CHANGELOG.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bd96ac09d..ca1b43b940 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,9 @@ The format is based on [Keep a 
Changelog](https://keepachangelog.com/en/1.0.0/)
  - The minimum toolchain requirements have increased for some architectures:
    - For x86, GCC 5.1 and Binutils 2.25, or Clang/LLVM 11
    - For ARM32 and ARM64, GCC 5.1 and Binutils 2.25
+   - For RISC-V, GCC 12.2 and Binutils 2.39
+ - Debian Trixie added to CI.  Debian Bullseye retired from CI for RISC-V due
+   to the baseline change.
  - Linux based device model stubdomains are now fully supported.
 
  - On x86:
--
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