Batched LOR: bugfix
Batched LOR: bugfix

This fixes a crash when running with CPU device and GPU hypre.

If hypre is using the GPU, then the HypreAMS solver requires the
coordinate vectors to be in device memory, not host memory.

mfem/mfem,mfem/mfem,mfem/mfem,mfem/mfem,mfem/mfem