Merge patch series "credential guards: credential preparation"

Christian Brauner <brauner@kernel.org> says:

This converts most users combining

* prepare_creds()
* modify new creds
* override_creds()
* revert_creds()
* put_cred()

to rely on credentials guards.

* patches from https://patch.msgid.link/20251103-work-creds-guards-prepare_creds-v1-0-b447b82f2c9b@kernel.org:
  trace: use override credential guard
  trace: use prepare credential guard
  coredump: use override credential guard
  coredump: use prepare credential guard
  coredump: split out do_coredump() from vfs_coredump()
  coredump: mark struct mm_struct as const
  coredump: pass struct linux_binfmt as const
  coredump: move revert_cred() before coredump_cleanup()
  sev-dev: use override credential guards
  sev-dev: use prepare credential guard
  sev-dev: use guard for path
  cred: add prepare credential guard

Link: https://patch.msgid.link/20251103-work-creds-guards-prepare_creds-v1-0-b447b82f2c9b@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>