kconfig: include common Kconfig files from top-level Kconfig ...

Based on this linux kernel commit:

> commit 1572497
> Author: Christoph Hellwig <hch@lst.de>
> Date:   Tue Jul 31 13:39:30 2018 +0200
>
>     kconfig: include common Kconfig files from top-level Kconfig

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Make generic default environment type a use choice ...

So far it was hardcoded for each board if defenv-1 or defenv-2 is used.
Make this a user choice so that a particular board no longer enforces
a defenv type.

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

openrisc: add initial device tree support ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Franck Jullien <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: allow "make ARCH=sandbox allyesconfig" ...

Compiling the tree with allyesconfig is helpful because different
compilers (gcc, clang) or static checkers (e.g. clang's scan-build)
can then process and check more code.

This patch introduces two new configuration symbols that Kconfig files
can depend on. That way, code that is only working where a cache or DMA
implementation exists can be opted out.

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

consistently use the same bitops.h file ...

We have many variants of the same bitops.h file. Consistently
use the same file for all architectures which completely use
the generic bitops versions.

Some architectures had static inline versions of functions
identically to the generic versions, these are removed and
the generic versions are used directly now.

Also several architectures depend on the generic find_*_bit
functions but didn't have the GENERIC_FIND_NEXT_BIT Kconfig
option selected. This is added where needed.

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

Set model and hostname at boardlevel ...

With multiboard support the compiletime generated BOARDINFO string
gets more and more meaningless. This removes it from Kconfig and
replaces it with a variable that can be set at boardlevel.

Also many boards have a standard setting for the hostname in the
environment. This patch also moves the standard to C code by calling
barebox_set_hostname().

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

Cleanup Kconfig files ...

This patch provides a global cleanup barebox Kconfig files. This includes
replacing spaces to tabs, formatting in accordance format, removing
extraneous lines and spaces. No functional changes.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

openrisc: switch to defaultenv-2 and change boardinfo ...

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add OpenRISC arch ...

OpenRISC is the original flagship project of the OpenCores community.
This project aims to develop a series of general purpose open source
RISC CPU architectures.

A team from OpenCores provided the first implementation, the OpenRISC
1200, written in the Verilog hardware description language.

Even though I should have created an mach-or1200 directory, it is not
necessary for now. The OpenRISC 1200 CPU is the only one available and
it will be for some time.

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>