scsi: aha1542: Fix multi-line comment style

Some comments in this driver don't comply with the preferred multi-line
comment style, as reported by 'scripts/checkpatch.pl':

WARNING: Block comments use * on subsequent lines
WARNING: Block comments use a trailing */ on a separate line

Fix those comments, along with the (unreported for some reason?) starts of
the multi-line comments not being /* on their own line...

Link: https://lore.kernel.org/r/08c231e5-d86f-9d0b-19ac-ad46fa0c0b58@omprussia.ru


Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>