MAINTAINERS: Update Saravana Kannan's email address

I've switched employers. Updating email address to be employer-agnostic and
remain reachable. Also updating mailmap so all my previous emails map to
this new one.

Signed-off-by: Saravana Kannan <saravanak@kernel.org>
Link: https://patch.msgid.link/20251229060350.852-1-saravanak@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Author: Saravana Kannan

.mailmap

@@ -704,6 +704,8 @@ Sankeerth Billakanti <quic_sbillaka@quicinc.com> <sbillaka@codeaurora.org>
 Santosh Shilimkar <santosh.shilimkar@oracle.org>
 Santosh Shilimkar <ssantosh@kernel.org>
 Sarangdhar Joshi <spjoshi@codeaurora.org>
+Saravana Kannan <saravanak@kernel.org> <skannan@codeaurora.org>
+Saravana Kannan <saravanak@kernel.org> <saravanak@google.com>
 Sascha Hauer <s.hauer@pengutronix.de>
 Sahitya Tummala <quic_stummala@quicinc.com> <stummala@codeaurora.org>
 Sathishkumar Muruganandam <quic_murugana@quicinc.com> <murugana@codeaurora.org>

MAINTAINERS

@@ -6532,7 +6532,7 @@ F:	rust/kernel/cpufreq.rs
 F:	tools/testing/selftests/cpufreq/
 
 CPU FREQUENCY DRIVERS - VIRTUAL MACHINE CPUFREQ
-M:	Saravana Kannan <saravanak@google.com>
+M:	Saravana Kannan <saravanak@kernel.org>
 L:	linux-pm@vger.kernel.org
 S:	Maintained
 F:	drivers/cpufreq/virtual-cpufreq.c
@@ -7170,7 +7170,7 @@ F:	drivers/base/devcoredump.c
 F:	include/linux/devcoredump.h
 
 DEVICE DEPENDENCY HELPER SCRIPT
-M:	Saravana Kannan <saravanak@google.com>
+M:	Saravana Kannan <saravanak@kernel.org>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 F:	scripts/dev-needs.sh
@@ -19544,7 +19544,7 @@ F:	include/linux/oa_tc6.h
 
 OPEN FIRMWARE AND FLATTENED DEVICE TREE
 M:	Rob Herring <robh@kernel.org>
-M:	Saravana Kannan <saravanak@google.com>
+M:	Saravana Kannan <saravanak@kernel.org>
 L:	devicetree@vger.kernel.org
 S:	Maintained
 Q:	http://patchwork.kernel.org/project/devicetree/list/