scsi: docs: convert sym53c500_cs.txt to ReST

Link: https://lore.kernel.org/r/eff6166b3442ddb37b934bca46e7f9ef25ebc2a4.1583136624.git.mchehab+huawei@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Documentation/scsi/index.rst

@@ -41,5 +41,6 @@ Linux SCSI Subsystem
    sd-parameters
    smartpqi
    st
+   sym53c500_cs
 
    scsi_transport_srp/figures

Documentation/scsi/sym53c500_cs.rst

@@ -1,3 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=======================
+The sym53c500_cs Driver
+=======================
+
 The sym53c500_cs driver originated as an add-on to David Hinds' pcmcia-cs
 package, and was written by Tom Corner (tcorner@via.at).  A rewrite was
 long overdue, and the current version addresses the following concerns:
@@ -20,4 +26,4 @@ Through the years, there have been a number of downloads of the pcmcia-cs
 version of this driver, and I guess it worked for those users.  It worked
 for Tom Corner, and it works for me.  Your mileage will probably vary.
 
---Bob Tracy (rct@frus.com)
+Bob Tracy (rct@frus.com)