MAINTAINERS: Update MCAN MMIO device driver maintainer

Update Chandrasekar Ramakrishnan as maintainer for mcan mmio device driver as I
will be moving to a different role.
Signed-off-by: Pankaj Sharma <pankj.sharma@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

MAINTAINERS

@@ -10910,7 +10910,7 @@ T:	git git://linuxtv.org/media_tree.git
 F:	drivers/media/radio/radio-maxiradio*
 
 MCAN MMIO DEVICE DRIVER
-M:	Pankaj Sharma <pankj.sharma@samsung.com>
+M:	Chandrasekar Ramakrishnan <rcsekar@samsung.com>
 L:	linux-can@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/net/can/bosch,m_can.yaml