mb/purism/librem_14: Move/fix touchpad interrupt GPIO

On production boards, the touchpad interrupt line was moved
from GPP_B20 to GPP_B3. Fix the GPIO pad config and devicetree entry,
and update documentation to remove touchpad config issue.

Change-Id: Iaefeba8f78c567b67e7a416c27299bff574c23ab
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51797
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions