[mlir][install] cmake to suppress install of libMLIR*.a and .o's#366

ronlieb wants to merge 1 commit intoamd-stagingROCm/llvm-project:amd-stagingfrom

amd/dev/rlieberm/suppressMLIRlibsROCm/llvm-project:amd/dev/rlieberm/suppressMLIRlibsCopy head branch name to clipboard