[MLIR] Fix ML IR build on Windows with Visual Studio

Summary: Right now the path for each lib in whole_archive_link when MSVC is used as the compiler is not a full path - and it's not even the correct path when VS is used to build. This patch sets the lib path to a full path using CMAKE_CFG_INTDIR which means the path will be correct regardless of whether ninja, make or VS is used and it will always be a full path.

Reviewers: denis13, jpienaar

Reviewed By: jpienaar

Subscribers: mgorny, mehdi_amini, rriddle, jpienaar, burmako, shauheen, antiagainst, nicolasvasilache, arpith-jacob, mgester, lucyrfox, llvm-commits, asmith

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D72403