Revert "uuid: use prandom_bytes()"

This reverts commit b9b0a72d920cd87f6a05634345483be588876507.
Revert "prandom: introduce prandom_bytes() and prandom_bytes_state()"

This reverts commit ab51f7926eebebdb1a434eb8569789cf35440fe2.
Revert "ext4: optimize test_root()"

This reverts commit f8a276160c437a9b0ff0135bd34b9397b54a9b25.
Revert "ext4: use prandom_u32() instead of get_random_bytes()"

This reverts commit 08bfb2d5f1db8be01990d8cae0d44a1476fbf2b9.
cpufreq: interactive: fix compiling warnings

The gcc warns like:

  cpufreq_interactive.c:745:6: warning: operation on 'ret' may be
undefined [-Wsequence-point]

It was introduced by commit cf0fad49d17cb8273ce555dd5b7afab67d7923bf.

Since sprintf(...) just return 1 (one character) in this case, ret
should not changed.
Just discarding the result of sprintf(...) leads to the result that
the committer of cf0fad49d17cb8273ce555dd5b7afab67d7923bf wants.

Change-Id: Ifed1cef6d6a31c3ed23dad03a567b3b9eddf3a57
Signed-off-by: Chih-Wei Huang <cwhuang@android-x86.org>
Signed-off-by: Dave Daynard <nardholio@gmail.com>
Almost done with fixing