Fix yet another issue introduced when renaming '-ccc-host-triple' to
'-target'. The original flag was part of a flag group that marked it as
driver-only. The new flag didn't ever get equivalent treatment. This
caused the '-target' flag to get passed down to any raw GCC invocation.
Marking it as a driver option fixes this and PR11875.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149244 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed