[cmake] Reenable libclang.dll on Windows when LLVM_ENABLE_PIC

This was accidentally disabled in #138119 for non-mingw Windows.

Author: aeubanks

clang/tools/libclang/CMakeLists.txt

@@ -106,7 +106,7 @@ if (LLVM_EXPORTED_SYMBOL_FILE)
                      DEPENDS ${LIBCLANG_VERSION_SCRIPT_FILE})
 endif()
 
-if((NOT (WIN32 OR CYGWIN) AND LLVM_ENABLE_PIC) OR
+if((NOT CYGWIN AND LLVM_ENABLE_PIC) OR
   ((WIN32 OR CYGWIN) AND NOT LIBCLANG_BUILD_STATIC))
   set(ENABLE_SHARED SHARED)
 endif()