[mlir] Fix shared build. NFC

Author: darkbuck

mlir/test/lib/Pass/CMakeLists.txt

@@ -1,3 +1,4 @@
+get_property(conversion_libs GLOBAL PROPERTY MLIR_CONVERSION_LIBS)
 # Exclude tests from libMLIR.so
 add_mlir_library(MLIRTestPass
   TestDynamicPipeline.cpp
@@ -10,6 +11,7 @@ add_mlir_library(MLIRTestPass
   ${MLIR_MAIN_INCLUDE_DIR}/mlir/Pass
 
   LINK_LIBS PUBLIC
+  ${conversion_libs}
   MLIRIR
   MLIRPass
   MLIRTestDialect