Documentation: Replace more lkml.org links with lore

As started by commit 05a5f51 ("Documentation: Replace lkml.org
links with lore"), replace a few more scattered lkml.org links with
lore to better use a single source that's more likely to stay available
long-term.

Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210210234005.2236201-1-keescook@chromium.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

CREDITS

@@ -550,7 +550,7 @@ D: gadget layers, SPI subsystem, GPIO subsystem, and more than a few
 D: device drivers.  His encouragement also helped many engineers get
 D: started working on the Linux kernel.  David passed away in early
 D: 2011, and will be greatly missed.
-W: https://lkml.org/lkml/2011/4/5/36
+W: https://lore.kernel.org/lkml/20110405034819.GA7872@kroah.com
 
 N: Gary Brubaker
 E: xavyer@ix.netcom.com

tools/scripts/Makefile.include

@@ -86,7 +86,8 @@ endif
 # in newer systems.
 # Needed for the __raw_cmpxchg in tools/arch/x86/include/asm/cmpxchg.h
 #
-# See https://lkml.org/lkml/2006/11/28/253 and https://gcc.gnu.org/gcc-4.8/changes.html,
+# See https://lore.kernel.org/lkml/9a8748490611281710g78402fbeh8ff7fcc162dbcbca@mail.gmail.com/
+# and https://gcc.gnu.org/gcc-4.8/changes.html,
 # that takes into account Linus's comments (search for Wshadow) for the reasoning about
 # -Wshadow not being interesting before gcc 4.8.