users: Clean up key ids and e-mail addresses

Several user entries contain outdated key ids or broken e-mail addresses
which make the map less useful than it could be:

Ben Widawsky's entry references subkey 8E9B20F4E7641153 instead of
primary key BF674C8889123D29 and his intel.com e-mail address bounces.
Fix it.

H. Peter Anvin's entry references key 58F7ABFE which cannot be found on
the usual keyservers.  It was introduced in 2016 by commit c019616fb7e4
("Port data from the existing map hosted on google").  Assume the key id
is outdated and replace it with the latest one from the kernel keyring.

Linus Walleij's entry references key 746e7b29c50a0166, a 1024 bit DSA
key created in 2005.  The kernel keyring contains a 4096 bit RSA key
instead which was created in 2011.  Assume that the older key has been
abandoned and replace it with the newer one.

Matthieu Baerts' entry similarly references key 3eacee6acfd74ede, a 2048
bit RSA key created 2009, whereas the kernel keyring contains a 4096 bit
RSA key created 2015.  Replace with the newer one.

Luis Chamberlain's entry references key DA364385 which cannot be found on
the usual keyservers.  Assume the key id is outdated and replace it with
the latest one from the kernel keyring.

Maxime Ripard's entry references key 1c7e626cec8f1020, a 4096 bit RSA
key created 2013, whereas the kernel keyring contains an eddsa263 key
created 2018.  Replace with the newer one.

Paolo Abeni's entry references the highest-order bits instead of the
lowest-order bits of his key 835023a82efbc1b74b5f62db2924798dcc8f13a4.
Fix it.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Matthieu Baerts <matttbe@kernel.org>
Cc: Ben Widawsky <bwidawsk@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>