Documentation: fix code block and literal block highlighting ...

Use shell script highlighting where it is resonable, use console
highlighting for transcripts, and fix some of the few cases where the
syntax was broken, resulting in text not being rendered at all.

Signed-off-by: Roland Hieber <r.hieber@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: environment: update automounts ...

Instead of using "ifup ethx" use "ifup -a" which works with all
network interfaces. Also replace "$ethx.serverip" with
"$global.net.server". This makes the automount independent of
the actual network interface. Remove all board specific
/env/init/automount files which were only there to use eth1 instead
of the previously hardcoded eth0.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: Numerous typoes/fixes in first few chapters of user manual. ...

Doc fixes such as:

 * font changes
 * spelling
 * punctuation
 * capitalization

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: Add new sphinxs docs ...

This is a rewrite of the Documentation in reStructuredText format using
Sphinx as build system, see http://sphinx-doc.org/.

The documentation is built into static html pages with 'make docs'.
The pages can be found under Documentation/html after building.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>