Configure GPIOs to match grunt proto v1.1 schematic.
Change EC chip to npcx7m6f.
Minimal board.c/h, just enough to build.
BUG=b:64935726
BRANCH=none
TEST=make BOARD=grunt
Change-Id: I1a1f581c7ee7b80808c0dde179bc3ee0d69f960e
Signed-off-by: Edward Hill <ecgh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/754302
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>