MAINTAINERS: change hardening mailing list

As more email from git history gets aimed at the OpenWall
kernel-hardening@ list, there has been a desire to separate "new topics"
from "on-going" work.

To handle this, the superset of hardening email topics are now to be
directed to [email protected].

Update the MAINTAINERS file and the .mailmap to accomplish this, so that
linux-hardening@ can be treated like any other regular upstream kernel
development list.

Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Emese Revfy <[email protected]>
Cc: "Tobin C. Harding" <[email protected]>
Cc: Tycho Andersen <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Link: https://lore.kernel.org/linux-hardening/202010051443.279CC265D@keescook/
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

.mailmap

@@ -188,6 +188,7 @@ Leon Romanovsky <[email protected]> <[email protected]>
 Linas Vepstas <[email protected]>
 Linus Lüssing <[email protected]> <[email protected]>
 Linus Lüssing <[email protected]> <[email protected]>
+<[email protected]> <[email protected]>
 Li Yang <[email protected]> <[email protected]>
 Li Yang <[email protected]> <[email protected]>
 Lukasz Luba <[email protected]> <[email protected]>

MAINTAINERS

@@ -7240,7 +7240,7 @@ F:	drivers/staging/gasket/
 GCC PLUGINS
 M:	Kees Cook <[email protected]>
 R:	Emese Revfy <[email protected]>
-L:	kernel-hardening@lists.openwall.com
+L:	linux-hardening@vger.kernel.org
 S:	Maintained
 F:	Documentation/kbuild/gcc-plugins.rst
 F:	scripts/Makefile.gcc-plugins
@@ -9802,7 +9802,7 @@ F:	drivers/scsi/53c700*
 LEAKING_ADDRESSES
 M:	Tobin C. Harding <[email protected]>
 M:	Tycho Andersen <[email protected]>
-L:	kernel-hardening@lists.openwall.com
+L:	linux-hardening@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks.git
 F:	scripts/leaking_addresses.pl