Summary:

Release notes can be found at
https://www.openssl.org/news/openssl-3.0-notes.html .

Obtained from:  https://www.openssl.org/source/openssl-3.0.8.tar.gz
Differential Revision:	https://reviews.freebsd.org/D38835

Test Plan:
```
$ git status
On branch vendor/openssl-3.0
nothing to commit, working tree clean
$ (cd ..; fetch http://www.openssl.org/source/openssl-${OSSLVER}.tar.gz http://www.openssl.org/source/openssl-${OSSLVER}.tar.gz.asc)
openssl-3.0.8.tar.gz                                    14 MB 4507 kBps    04s
openssl-3.0.8.tar.gz.asc                               833  B   10 MBps    00s
$ set | egrep '(XLIST|OSSLVER)='
OSSLVER=3.0.8
XLIST=FREEBSD-Xlist
$ gpg --list-keys
/home/ngie/.gnupg/pubring.kbx
-----------------------------
pub   rsa4096 2014-10-04 [SC]
      7953AC1FBC3DC8B3B292393ED5E9E43F7DF9EE8C
uid           [ unknown] Richard Levitte <[email protected]>
uid           [ unknown] Richard Levitte <[email protected]>
uid           [ unknown] Richard Levitte <[email protected]>
sub   rsa4096 2014-10-04 [E]

$ gpg --verify openssl-${OSSLVER}.tar.gz.asc openssl-${OSSLVER}.tar.gz
gpg: Signature made Tue Feb  7 05:43:55 2023 PST
gpg:                using RSA key 7953AC1FBC3DC8B3B292393ED5E9E43F7DF9EE8C
gpg: Good signature from "Richard Levitte <[email protected]>" [unknown]
gpg:                 aka "Richard Levitte <[email protected]>" [unknown]
gpg:                 aka "Richard Levitte <[email protected]>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 7953 AC1F BC3D C8B3 B292  393E D5E9 E43F 7DF9 EE8C
$ (cd vendor.checkout/; git status; find . -type f -or -type l | cut -c 3- | sort > ../old)
On branch vendor/openssl-3.0
nothing to commit, working tree clean
$ tar -x -X $XLIST -f ../openssl-${OSSLVER}.tar.gz -C ..
$ rsync --exclude FREEBSD.* --delete -avzz ../openssl-${OSSLVER}/* .
$ cat .git
gitdir: /home/ngie/git/freebsd-src/.git/worktrees/vendor.checkout
$ diff -arq ../openssl-3.0.8  .
Only in .: .git
Only in .: FREEBSD-Xlist
Only in .: FREEBSD-upgrade
$ git status FREEBSD*
On branch vendor/openssl-3.0
nothing to commit, working tree clean
$
```

Reviewers: emaste, jkim

Subscribers: imp, andrew, dab

Differential Revision: https://reviews.freebsd.org/D38835

Merge commit 'e4520c8bd1d300a7a338d0ed4af171a2d0e583ef' into khorben/openssl-3.0

With the update to OpenSSL 3.0, engines are installed into a different
folder, and modular providers can be installed into a dedicated folder
as well.

Ed has a better commit message for this in commit
3e98230.

This also requires lowering the level of warnings for archive_hmac.c
when building with OpenSSL 3.

This disables warning-errors for:

    archive_hmac.c:241:64: error: passing argument 2 of
    'OSSL_PARAM_construct_utf8_string' discards 'const' qualifier from
    pointer target type [-Werror=discarded-qualifiers]

This commit leveraged the updated Makefile.asm in order to re-generate
the assembly files provided by OpenSSL.

This casts the second parameter to OSSL_PARAM_construct_utf8_string() as
a char * for a string litteral, as documented in EVP_MAC(3).

ec_nistp_64_gcc_128 is only supported on 64-bit systems, but also only
on little-endian systems.

This fixes the build on PowerPC 64 (big-endian).