[PATCH master] Documentation: migration-2025.07.0: note env part change on 6ullevk

[Ahmad Fatoum]

The total is still 1M, but userspace that wants to modify the barebox
environment could end up overwriting parts of barebox instead, so
mention that for completeness.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 Documentation/migration-guides/migration-2025.07.0.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/migration-guides/migration-2025.07.0.rst b/Documentation/migration-guides/migration-2025.07.0.rst
index 1d2d5b0f4267..a89670a42f3d 100644
--- a/Documentation/migration-guides/migration-2025.07.0.rst
+++ b/Documentation/migration-guides/migration-2025.07.0.rst
@@ -22,3 +22,6 @@ Configuration options
   It's recommended that all boards switch to deep probe.
   If deep probe breaks your platform, please report to the mailing list
   and set ``barebox,disable-deep-probe`` in your device tree.
+
+* The hardcoded i.MX6ULL 14x14 EVK partition layout for barebox and its
+  environment on USDHC2 has changed. The split moved from 768/256 to 896/128 KiB.
-- 
2.39.5