pan/bi: Rename port -> slot

To match the canonical naming convention.

$ sed -i -e 's/\([_ \.>"!]\)[pP]ort\([ ,'"'"'_0123s\(\[]\)/\1slot\2/g' *.c *.h

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6793>
7 files changed