Add a no dwarf version of assembler macros.

For the __release and __release_rt functions, the previous macros
would add a dwarf cfi entry for the function with no values. This works
with libunwind since it always tries the arm unwind information first.

This change removes those entries by creating a no dwarf version of the
assembler macro.

Change-Id: Ib93e42fff5a79b8d770eab0071fdee7d2afa988d