xfs: remove unused tp arg from xfs_da_reada_buf & callers

This one hits a few functions as we unravel the unused arg
up through the callers.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --cc fs/xfs/xfs_da_btree.c
Simple merge

diff --cc fs/xfs/xfs_da_btree.h
Simple merge

diff --cc fs/xfs/xfs_dir2_data.c
Simple merge

diff --cc fs/xfs/xfs_dir2_priv.h
Simple merge

diff --cc fs/xfs/xfs_dir2_readdir.c
Simple merge

diff --cc fs/xfs/xfs_file.c
Simple merge