Add more gpio chip select error info

This is to help debug GPIO chip select issues on ATE board.

Signed-off-by: Charles Manning <cdhmanning@gmail.com>
Save some changes to demo integrated dts

Signed-off-by: Charles Manning <cdhmanning@gmail.com>
Merge branch 'fds-ate-integration-3.9.0-old' into fds-ate-integration-3.9.0