tools: bpftool: add bash completion for bpftool prog load

Add bash completion for bpftool command `prog load`. Completion for this
command is easy, as it only takes existing file paths as arguments.

Fixes: 49a086c ("bpftool: implement prog load command")
Signed-off-by: Quentin Monnet <[email protected]>
Reviewed-by: Jakub Kicinski <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>

Author: qmonnet

tools/bpf/bpftool/bash-completion/bpftool

@@ -230,10 +230,14 @@ _bpftool()
                     fi
                     return 0
                     ;;
+                load)
+                    _filedir
+                    return 0
+                    ;;
                 *)
                     [[ $prev == $object ]] && \
-                        COMPREPLY=( $( compgen -W 'dump help pin show list' -- \
-                            "$cur" ) )
+                        COMPREPLY=( $( compgen -W 'dump help pin load \
+                            show list' -- "$cur" ) )
                     ;;
             esac
             ;;