Revert "treewide: Change list_sort to use const pointers"

This reverts commit 55e6f8b3 which is
commit 4f0f586b upstream.

This commit is already in this branch, but in a different fashion, as
CFI is included here.  By having this version, there is a crc error that
is due to the use of typedefs.  Reverting this commit changes nothing
and fixes the CRC issue.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I97849a104acbc88599481f6c5c9d024570ec5c87