[U-Boot] doc: Replace DocBook with sphinx-based docs

[York Sun]

On 07/26/2018 10:58 AM, York Sun wrote:
> On 07/24/2018 05:44 AM, Tom Rini wrote:
>> On Tue, Jul 10, 2018 at 08:40:17AM +0200, Mario Six wrote:
>>
>>> The Linux kernel moved to sphinx-based documentation and got rid of the
>>> DocBook based documentation quite a while ago. Hence, the DocBook
>>> documentation for U-Boot should be converted as well.
>>>
>>> To achieve this, import the necessary files from Linux v4.17, and
>>> convert the current DocBook documentation (three files altogether) to
>>> sphinx/reStructuredText.
>>>
>>> For now, all old DocBook documentation was merged into a single
>>> handbook, tentatively named "U-Boot Hacker Manual".
>>>
>>> For some source files, the documentation style was changed to comply
>>> with kernel-doc; no functional changes were applied.
>>>
>>> Signed-off-by: Mario Six <mario.six at gdsys.cc>
>>
>> Applied to u-boot/master, thanks!
>>
> 
> Does anyone see this error?
> 
> $ make distclean
> scripts/Makefile.clean:15: doc/DocBook/Makefile: No such file or directory
> make[1]: *** No rule to make target 'doc/DocBook/Makefile'.  Stop.
> Makefile:1610: recipe for target '_clean_doc/DocBook' failed
> make: *** [_clean_doc/DocBook] Error 2

Ah! Never mind. I see Tom's patch sent yesterday.

York