Changes

Prescribe Forcings GPUization (#1204)

* First bit of prescribe forcings GPUization. Only tested with arm so far.

* Cherry-pick merge

* Missed file

* GPUizing more cases

* Rest of cases GPUized

* Little more GPUization and fixes.

* Bug fix to minloc calculation affecting cases with l_modify_bc_for_cnvg_test=.true., unclear why this is a bug. Also adding ifdef around print in GPU code

* Adding Benchmark_cases to OMP conversion list