docs: networking: convert hinic.txt to ReST

Not much to be done here:

- add SPDX header;
- adjust titles and chapters, adding proper markups;
- adjust identation, whitespaces and blank lines;
- add to networking/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/networking/hinic.rst

@@ -1,3 +1,6 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+============================================================
 Linux Kernel Driver for Huawei Intelligent NIC(HiNIC) family
 ============================================================
 
@@ -110,7 +113,7 @@ hinic_dev - de/constructs the Logical Tx and Rx Queues.
 (hinic_main.c, hinic_dev.h)
 
 
-Miscellaneous:
+Miscellaneous
 =============
 
 Common functions that are used by HW and Logical Device.

Documentation/networking/index.rst

@@ -63,6 +63,7 @@ Contents:
    generic_netlink
    gen_stats
    gtp
+   hinic
 
 .. only::  subproject and html
 

MAINTAINERS

@@ -7815,7 +7815,7 @@ HUAWEI ETHERNET DRIVER
 M:	Aviad Krawczyk <aviad.krawczyk@huawei.com>
 L:	netdev@vger.kernel.org
 S:	Supported
-F:	Documentation/networking/hinic.txt
+F:	Documentation/networking/hinic.rst
 F:	drivers/net/ethernet/huawei/hinic/
 
 HUGETLB FILESYSTEM