[KP] fix compilation bug in phi (#40805)

* [KP] fix compilation bug in phi

* delete the comment

* delete useless comment

cmake/phi.cmake

@@ -118,7 +118,7 @@ function(kernel_library TARGET)
         if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${TARGET}.cc)
             list(APPEND common_srcs ${CMAKE_CURRENT_SOURCE_DIR}/${TARGET}.cc)
         endif()
-        if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/cpu/${TARGET}.cc)
+        if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/cpu/${TARGET}.cc AND NOT WITH_XPU_KP)
             list(APPEND cpu_srcs ${CMAKE_CURRENT_SOURCE_DIR}/cpu/${TARGET}.cc)
         endif()
         if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/selected_rows/${TARGET}.cc)
@@ -151,6 +151,9 @@ function(kernel_library TARGET)
                 file(RENAME ${CMAKE_CURRENT_BINARY_DIR}/kps/${TARGET}.cu ${CMAKE_CURRENT_BINARY_DIR}/kps/${TARGET}.kps)
                 list(APPEND kps_srcs ${CMAKE_CURRENT_BINARY_DIR}/kps/${TARGET}.kps)
             endif()
+            if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/cpu/${TARGET}.cc )
+                list(APPEND kps_srcs ${CMAKE_CURRENT_SOURCE_DIR}/cpu/${TARGET}.cc)
+            endif()
         endif()
     else()
         # TODO(chenweihang): impl compile by source later