[PATCH v2] CHANGELOG: Minimum toolchain requirements for x86 and ARM

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Signed-off-by: Andrew Cooper <andrew.cooper3@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:
 * State x86 and ARM, rather than implying all architectures.
---
 CHANGELOG.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35ab6749241c..8f6afa5c858a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ The format is based on [Keep a 
Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [4.21.0 
UNRELEASED](https://xenbits.xenproject.org/gitweb/?p=xen.git;a=shortlog;h=staging)
 - TBD
 
 ### Changed
+ - 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
 
 ### Added
  - On x86:
-- 
2.39.5