MAINTAINERS: assign em_canid.c additionally to CAN maintainers

The extended match rule em_canid is used to classify CAN frames based
on their CAN Identifier. To keep the CAN maintainers in the loop for
relevant changes which might affect the CAN specific functionality add
em_canid.c to the CAN NETWORK LAYER files.

Signed-off-by: Oliver Hartkopp <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Marc Kleine-Budde <[email protected]>

Author: hartkopp

MAINTAINERS

@@ -5065,6 +5065,7 @@ F:	include/uapi/linux/can/gw.h
 F:	include/uapi/linux/can/isotp.h
 F:	include/uapi/linux/can/raw.h
 F:	net/can/
+F:	net/sched/em_canid.c
 
 CAN-J1939 NETWORK LAYER
 M:	Robin van der Gracht <[email protected]>