Merge patch series "rsa and fit_check_sign build fix for v2025.07-rc"

Shiji Yang <yangshiji66@outlook.com> says:

This patchset fixes some compilation errors that I caught in version
v2025.07-rc4 and branch next. If they are acceptable, please apply
them to the master branch. If anyone has a better way to fix these
issues, it's fine to ignore this patchset.

Link: https://lore.kernel.org/r/OSBPR01MB16702ED24460D23A7ED63440BC7DA@OSBPR01MB1670.jpnprd01.prod.outlook.com