Revert r247977, "clang/test/lit.cfg: *-ps4 doesn't have appropriate driver...

Revert r247977, "clang/test/lit.cfg: *-ps4 doesn't have appropriate driver yet. Mark it as "non-clang-driver"."

They, "tests requiring clang-driver", should work in trunk since ps4 driver has been introduced.

llvm-svn: 250866