[Bug debug/71669] DW_AT_data_bit_offset is not emitted for dwarf4 and above

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71669

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note GDB does not support it yet:
https://sourceware.org/bugzilla/show_bug.cgi?id=12616