MAINTAINERS: add myself as maintainer for the fsl-mc bus

Both Laurentiu and Stuart left the company and are no longer involved
with the fsl-mc bus. Remove them and add myself as maintainer.

Signed-off-by: Ioana Ciornei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christophe Leroy <[email protected]>

Author: IoanaCiornei

MAINTAINERS

@@ -19294,8 +19294,7 @@ F:	fs/qnx6/
 F:	include/linux/qnx6_fs.h
 
 QORIQ DPAA2 FSL-MC BUS DRIVER
-M:	Stuart Yoder <[email protected]>
-M:	Laurentiu Tudor <[email protected]>
+M:	Ioana Ciornei <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	Documentation/ABI/stable/sysfs-bus-fsl-mc