soc/intel/denverton_ns + mb: Rename gpio configuration

In order to use the shared code in intelblock, this patch renames the
denverton specific implementation to not use the same names (for files
and types).

- rename pad_config to remove conflict with soc/.../intelblocks/gpio.h
- rename gpio.c, soc/gpio.h to not conflict with intelblock

Note: There is no functional change in this patch.

Change-Id: Id3f4e2dc0a118e8c864a96a435fa22e32bbe684f
Signed-off-by: Julien Viard de Galbert <jviarddegalbert@online.net>
Reviewed-on: https://review.coreboot.org/24926
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
7 files changed