The 'environment' word is too long. We mostly use 'env' in U-Boot, so use
that as the name of the include directory too.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

Next step to get rid of the header files in icnlude/configs. Move
most of the defines to km83xx.c directly. Some remaining defines
which should go to Kconfig are moved to km-mpc83xx.h for now.

Also remove some unused defines and move one define to powerpc.env
as we only need it there.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>

Use already present common.env file and add a powerpc specific env
so that we can move all the environment defines to text files.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>

Create a common.env which we can use later on also for other boards.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>