Add pci subcommand for rebinding to vfio

pci

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+BASE_PATH=/sys/bus/pci/
+
+# sanitize variables
+if [[ "${BASE_PATH: -1}" = '/' ]]; then
+    BASE_PATH="${BASE_PATH::${#BASE_PATH}-1}"
+fi
+
+vfio_rebind_device() {
+    local pci_id
+
+    pci_id="$1"
+    if [[ -e "$BASE_PATH/devices/$pci_id" ]]; then
+	echo "$pci_id" | sudo tee "$BASE_PATH/devices/$pci_id/driver/unbind"
+	echo "$pci_id" | sudo tee "$BASE_PATH/drivers/vfio-pci/bind"
+    fi
+}
+
+"$@"