[flang][OpenMP] Extend do concurrent mapping to device

Upstreams further parts of `do concurrent` to OpenMP conversion pass
from AMD's fork. This PR extends the pass by adding support for mapping
to the device.

Author: ergawy

flang/lib/Optimizer/OpenMP/CMakeLists.txt

@@ -26,6 +26,7 @@ add_flang_library(FlangOpenMPTransforms
   FIRSupport
   FortranSupport
   HLFIRDialect
+  FortranUtils
 
   MLIR_DEPS
   ${dialect_libs}