Fix missing intraining_embedding_pruning_cpu in Cmake

Summary:
X-link: facebookresearch/FBGEMM#2319

as titled.

Differential Revision: D91096385

Author: spcyppt

fbgemm_gpu/FbgemmGpu.cmake

@@ -28,6 +28,7 @@ set(fbgemm_gpu_sources_cpu_static
     src/memory_utils/memory_utils.cpp
     src/memory_utils/memory_utils_ops.cpp
     src/merge_pooled_embedding_ops/merge_pooled_embedding_ops_cpu.cpp
+    src/intraining_embedding_pruning_ops/intraining_embedding_pruning_cpu.cpp
     src/permute_multi_embedding_ops/permute_multi_embedding_function.cpp
     src/permute_multi_embedding_ops/permute_multi_embedding_ops_cpu.cpp
     src/permute_pooled_embedding_ops/permute_pooled_embedding_function.cpp