[CMake] [WinMsvc] Look for includes and libs in ${MSVC_BASE}/atlmfc

This is necessary if building with the DIA SDK enabled.

Differential Revision: https://reviews.llvm.org/D69240

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375486 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed