docs: networking: device drivers: convert intel/ipw2200.txt to ReST

- add SPDX header;
- adjust titles and chapters, adding proper markups;
- comment out text-only TOC from html/pdf output;
- use copyright symbol;
- use :field: markup;
- mark code blocks and literals as such;
- mark tables as such;
- adjust identation, whitespaces and blank lines where needed;
- 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/device_drivers/index.rst

@@ -40,6 +40,7 @@ Contents:
    freescale/dpaa
    freescale/gianfar
    intel/ipw2100
+   intel/ipw2200
 
 .. only::  subproject and html
 

MAINTAINERS

@@ -8743,7 +8743,7 @@ M:	Stanislav Yakovlev <stas.yakovlev@gmail.com>
 L:	linux-wireless@vger.kernel.org
 S:	Maintained
 F:	Documentation/networking/device_drivers/intel/ipw2100.rst
-F:	Documentation/networking/device_drivers/intel/ipw2200.txt
+F:	Documentation/networking/device_drivers/intel/ipw2200.rst
 F:	drivers/net/wireless/intel/ipw2x00/
 INTEL PSTATE DRIVER

drivers/net/wireless/intel/ipw2x00/Kconfig

@@ -78,7 +78,7 @@ config IPW2200
 	  A driver for the Intel PRO/Wireless 2200BG and 2915ABG Network
 	  Connection adapters.
 
-	  See <file:Documentation/networking/device_drivers/intel/ipw2200.txt>
+	  See <file:Documentation/networking/device_drivers/intel/ipw2200.rst>
 	  for information on the capabilities currently enabled in this
 	  driver and for tips for debugging issues and problems.