clocksource: sh_cmt: Add index to struct sh_cmt_channel
clocksource: sh_cmt: Add index to struct sh_cmt_channel

Use the index when printing messages to identify the channel.

Signed-off-by: Laurent Pinchart <ae960578cc5eca7b9b1dbc37d9caa6cb634f35e0@ideasonboard.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs