[Bug libfortran/67140] undefined reference to _gfortran_mvbits_i16

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67140

--- Comment #2 from kargl at gcc dot gnu.org ---
Created attachment 36144
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36144&action=edit
patch

Patched built and tested with OP's code.
Regression test passed.