linux-yocto/cfg/6.6: drop CONFIG_DEBUG_CREDENTIALS

linux-yocto/cfg/6.6: drop CONFIG_DEBUG_CREDENTIALS

Integrating the following commit(s) to linux-yocto/.:

1/1 [
    Author: Bruce Ashfield
    Email: bruce.ashfield@gmail.com
    Subject: cfg/debug: drop DEBUG_CREDENTIALS
    Date: Tue, 27 Feb 2024 11:57:58 -0500

    The upstream commit (which was also backported to -stable
    for some reason):

      commit 207f135d819344c03333246f784f6666e652e081
      Author: Jens Axboe <axboe@kernel.dk>
      Date:   Fri Dec 15 13:40:57 2023 -0700

          cred: get rid of CONFIG_DEBUG_CREDENTIALS

          commit ae1914174a63a558113e80d24ccac2773f9f7b2b upstream.

          This code is rarely (never?) enabled by distros, and it hasn't caught
          anything in decades. Let's kill off this legacy debug code.

          Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
          Signed-off-by: Jens Axboe <axboe@kernel.dk>
          Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
          Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Means that we can drop our use of CONFIG_DEBUG_CREDENTIALS.

    It does leave an emptry .cfg file, but to keep any external includes
    around, we'll leave the file for a while.

    Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>