doc: Add page to publish license info on the website

COPYING file existed in the tree for a very long time, but now
we also have a website which is generated from the docs in the tree.

This patch adds a page to display content of the COPYING file on
the website. The file stays in the tree, it just got slight
formatting added to convert it to rst format. No changes to the
text, just formatting (headings, paragraphs etc).

Change-Id: Ieb05d61ccc1b66e9ce91b7dfa18672a4da7db52c
Signed-off-by: Anastasia Klimchuk <aklm@flashrom.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/89278
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

COPYING.rst

@@ -1,12 +1,16 @@
 GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+==========================
+
+*Version 2, June 1991*
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
 Preamble
+--------
 
 The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -56,8 +60,8 @@ patent must be licensed for everyone's free use or not licensed at all.
 The precise terms and conditions for copying, distribution and
 modification follow.
 
-		    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+------------------------------------------------------------------------------------------
 
 0. This License applies to any program or other work which contains
 a notice placed by the copyright holder saying it may be distributed
@@ -256,6 +260,9 @@ of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.
 
 NO WARRANTY
+-----------
+
+.. container:: danger, admonition
 
 	11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 	FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +284,10 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 	PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 	POSSIBILITY OF SUCH DAMAGES.
 
-		     END OF TERMS AND CONDITIONS
+**END OF TERMS AND CONDITIONS**
 
 How to Apply These Terms to Your New Programs
+---------------------------------------------
 
 If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@@ -313,13 +321,13 @@ If the program is interactive, make it output a short notice like this
 when it starts in an interactive mode:
 
     Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type "show w".
     This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
+    under certain conditions; type "show c" for details.
 
-The hypothetical commands `show w' and `show c' should show the appropriate
+The hypothetical commands "show w" and "show c" should show the appropriate
 parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
+be called something other than "show w" and "show c"; they could even be
 mouse-clicks or menu items--whatever suits your program.
 
 You should also get your employer (if you work as a programmer) or your
@@ -327,7 +335,7 @@ school, if any, to sign a "copyright disclaimer" for the program, if
 necessary.  Here is a sample; alter the names:
 
   Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+  "Gnomovision" (which makes passes at compilers) written by James Hacker.
 
   <signature of Ty Coon>, 1 April 1989
   Ty Coon, President of Vice

MAINTAINERS

@@ -138,6 +138,7 @@ M:	Anastasia Klimchuk <aklm@chromium.org>
 S:	Maintained
 F:	doc/
 F:	README.rst
+F:	COPYING.rst
 
 ################################################################################
 # PROGRAMMERS

doc/about_flashrom/index.rst

@@ -7,4 +7,5 @@ About flashrom
     team
     hall_of_fame
     code_of_conduct
+    license
     privacy_policy

doc/about_flashrom/license.rst

@@ -0,0 +1,7 @@
+===================
+Licence and copying
+===================
+
+Information below can also be found in the ``COPYING.rst`` file in the git tree.
+
+.. include:: ../../COPYING.rst