change implementation of Get_Pressure_From_DE from hydro/hydro_cuda t…
change implementation of Get_Pressure_From_DE from hydro/hydro_cuda t…

cholla-hydro/cholla,cholla-hydro/cholla,cholla-hydro/cholla,cholla-hydro/cholla,evaneschneider/cholla,evaneschneider/cholla,evaneschneider/cholla,evaneschneider/cholla