clean up PIM CMake

update README.md

src/PIM/Pass/CMakeLists.txt

@@ -0,0 +1,15 @@
+add_pim_library(OMPimPasses
+  CountInstructionPass.cpp
+  MessagePass.cpp
+  PimConstantFolding/Common.cpp
+  PimConstantFolding/Patterns/ConstantPatterns.cpp
+  PimConstantFolding/PimConstantFoldingPass.cpp
+  PimConstantFolding/Patterns/SubviewPatterns.cpp
+  PimHostVerificationPass.cpp
+
+  EXCLUDE_FROM_OM_LIBS
+
+  LINK_LIBS PUBLIC
+  MLIRLinalgDialect
+  OMPimCommon
+)