OpenMP, C++: Add template support for the has_device_addr clause.
This patch adds support for list items in the has_device_addr clause which type
is given by C++ template parameters.
gcc/cp/ChangeLog:
* pt.cc (tsubst_omp_clauses): Added OMP_CLAUSE_HAS_DEVICE_ADDR.
* semantics.cc (finish_omp_clauses): Added template decl processing.
libgomp/ChangeLog:
* testsuite/libgomp.c++/target-has-device-addr-7.C: New test.
* testsuite/libgomp.c++/target-has-device-addr-8.C: New test.
* testsuite/libgomp.c++/target-has-device-addr-9.C: New test.