xfs: standardize daddr formatting in ftrace output

Always print disk addr (i.e. 512 byte block) numbers in hexadecimal and
preceded with the unit "daddr".

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>