[MLIR] mlir-opt needs PUBLIC dependence

We see intermittent build errors on the windows buildbot because
mlir-opt is including Linalg headers which haven't been built yet.
This dependence should be resolved by declaring a PUBLIC dependence
on the Linalg library when building MLIROptMain.

Author: stephenneuendorffer

mlir/tools/mlir-opt/CMakeLists.txt

@@ -39,7 +39,7 @@ add_mlir_library(MLIRMlirOptMain
 
   EXCLUDE_FROM_LIBMLIR
 
-  LINK_LIBS
+  LINK_LIBS PUBLIC
   ${LIBS}
 
   DEPENDS