Fix: add EXX erfc parameter handling for pw basis type (#7166)

* fix: add runtime check for cudaHostRegister in EXX PW

Add runtime check (PARAM.inp.device == "gpu") before calling
cudaHostRegister and cudaHostUnregister to avoid failures when
CUDA is enabled but running on CPU device (e.g., on clusters with
both CPU and GPU nodes but only compiling once).

* Update source/source_pw/module_pwdft/op_pw_exx_pot.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update source/source_pw/module_pwdft/op_pw_exx_pot.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix: add erfc param handling for pw basis in EXX

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: Flying-dragon-boxing

source/source_io/module_parameter/input_conv.cpp

@@ -413,6 +413,16 @@ void Input_Conv::Convert()
                         {"singularity_correction", PARAM.inp.exx_singularity_correction} }};
                 }
             }
+            else if(PARAM.inp.basis_type == "pw" || PARAM.inp.basis_type == "lcao_in_pw")
+            {
+                GlobalC::exx_info.info_global.coulomb_param[Conv_Coulomb_Pot_K::Coulomb_Type::Erfc].resize(erfc_alpha.size());
+                for(std::size_t i=0; i<erfc_alpha.size(); ++i)
+                {
+                    GlobalC::exx_info.info_global.coulomb_param[Conv_Coulomb_Pot_K::Coulomb_Type::Erfc] = {{
+                        {"alpha", ModuleBase::GlobalFunc::TO_STRING(erfc_alpha[i])},
+                        {"omega", ModuleBase::GlobalFunc::TO_STRING(PARAM.inp.exx_erfc_omega[i])} }};
+                }
+            }
         }
     }
 #ifdef __EXX