scsi: docs: convert BusLogic.txt to ReST

Link: https://lore.kernel.org/r/750629b6a5233c85c5391c44d126606b8aabefc8.1583136624.git.mchehab+huawei@kernel.org


Acked-by: Khalid Aziz <khalid@gonehiking.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>