MAINTAINERS: Update Ben's email address

I'm leaving Intel. Update email address to korg and add .mailmap
entries. For now, I will be taking a reduced role in CXL development,
but I still plan to spend time working on it, and I can still serve as a
good substitute if needed for maintainer responsibilities (that may
change in the future).
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://lore.kernel.org/r/20220520180059.632054-1-bwidawsk@kernel.orgSigned-off-by: Dan Williams <dan.j.williams@intel.com>

.mailmap

@@ -62,6 +62,9 @@ Bart Van Assche <bvanassche@acm.org> <bart.vanassche@sandisk.com>
 Bart Van Assche <bvanassche@acm.org> <bart.vanassche@wdc.com>
 Ben Gardner <bgardner@wabtec.com>
 Ben M Cahill <ben.m.cahill@intel.com>
+Ben Widawsky <bwidawsk@kernel.org> <ben@bwidawsk.net>
+Ben Widawsky <bwidawsk@kernel.org> <ben.widawsky@intel.com>
+Ben Widawsky <bwidawsk@kernel.org> <benjamin.widawsky@intel.com>
 Björn Steinbrink <B.Steinbrink@gmx.de>
 Björn Töpel <bjorn@kernel.org> <bjorn.topel@gmail.com>
 Björn Töpel <bjorn@kernel.org> <bjorn.topel@intel.com>

MAINTAINERS

@@ -5009,7 +5009,7 @@ COMPUTE EXPRESS LINK (CXL)
 M:	Alison Schofield <alison.schofield@intel.com>
 M:	Vishal Verma <vishal.l.verma@intel.com>
 M:	Ira Weiny <ira.weiny@intel.com>
-M:	Ben Widawsky <ben.widawsky@intel.com>
+M:	Ben Widawsky <bwidawsk@kernel.org>
 M:	Dan Williams <dan.j.williams@intel.com>
 L:	linux-cxl@vger.kernel.org
 S:	Maintained