MAINTAINERS: Update Jonathan Cameron's email address

Update my email address for CXL, FWCTL and Cache subsystems to use my
kernel.org account. Also update .mailmap.

Separate patches will replace maintainers for HiSilicon specific hardware.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260415124357.12539-1-Jonathan.Cameron@huawei.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

Author: jic23

.mailmap

@@ -418,6 +418,7 @@ John Stultz <johnstul@us.ibm.com>
 <jon.toppins+linux@gmail.com> <jtoppins@cumulusnetworks.com>
 <jon.toppins+linux@gmail.com> <jtoppins@redhat.com>
 Jonas Gorski <jonas.gorski@gmail.com> <jogo@openwrt.org>
+Jonathan Cameron <jic23@kernel.org> <jonathan.cameron@huawei.com>
 Jordan Crouse <jordan@cosmicpenguin.net> <jcrouse@codeaurora.org>
 <josh@joshtriplett.org> <josh@freedesktop.org>
 <josh@joshtriplett.org> <josh@kernel.org>

MAINTAINERS

@@ -6424,7 +6424,7 @@ F:	include/linux/compiler_attributes.h
 
 COMPUTE EXPRESS LINK (CXL)
 M:	Davidlohr Bueso <dave@stgolabs.net>
-M:	Jonathan Cameron <jonathan.cameron@huawei.com>
+M:	Jonathan Cameron <jic23@kernel.org>
 M:	Dave Jiang <dave.jiang@intel.com>
 M:	Alison Schofield <alison.schofield@intel.com>
 M:	Vishal Verma <vishal.l.verma@intel.com>
@@ -6440,7 +6440,7 @@ F:	include/uapi/linux/cxl_mem.h
 F:	tools/testing/cxl/
 
 COMPUTE EXPRESS LINK PMU (CPMU)
-M:	Jonathan Cameron <jonathan.cameron@huawei.com>
+M:	Jonathan Cameron <jic23@kernel.org>
 L:	linux-cxl@vger.kernel.org
 S:	Maintained
 F:	Documentation/admin-guide/perf/cxl.rst
@@ -10524,7 +10524,7 @@ FWCTL SUBSYSTEM
 M:	Dave Jiang <dave.jiang@intel.com>
 M:	Jason Gunthorpe <jgg@nvidia.com>
 M:	Saeed Mahameed <saeedm@nvidia.com>
-R:	Jonathan Cameron <Jonathan.Cameron@huawei.com>
+R:	Jonathan Cameron <jic23@kernel.org>
 S:	Maintained
 F:	Documentation/userspace-api/fwctl/
 F:	drivers/fwctl/
@@ -25136,7 +25136,7 @@ F:	drivers/staging/
 
 STANDALONE CACHE CONTROLLER DRIVERS
 M:	Conor Dooley <conor@kernel.org>
-M:	Jonathan Cameron <jonathan.cameron@huawei.com>
+M:	Jonathan Cameron <jic23@kernel.org>
 S:	Maintained
 T:	git https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/
 F:	Documentation/devicetree/bindings/cache/