BACKPORT: fscrypt: rename fscrypt_info => fscrypt_inode_info

We are going to track per-extent information, so it'll be necessary to
distinguish between inode infos and extent infos.  Rename fscrypt_info
to fscrypt_inode_info, adjusting any lines that now exceed 80
characters.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
[ebiggers: rebased onto fscrypt tree, renamed fscrypt_get_info(),
 adjusted two comments, and fixed some lines over 80 characters]
Link: https://lore.kernel.org/r/20231005025757.33521-1-ebiggers@kernel.org


Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Eric Biggers <ebiggers@google.com>

Bug: 302588300
(cherry picked from commit 3e7807d5)
(resolved conflicts in fscrypt_private.h and inline_crypt.c related to
 HW-wrapped key support)
Change-Id: I6b2c299cd6157d98fde5a6d22e59c5e18af3d5d8
Signed-off-by: Eric Biggers <ebiggers@google.com>