Make test/Driver/baremetal.cpp work with linkers other than lld

This test fails if clang is configure with, for example, gold as the
default linker. It does not appear that this test really relies on lld
so make the checks accept ld, ld.gold and ld.bfd too.

llvm-svn: 338290
GitOrigin-RevId: ce9b3e084c43e99fbcfeb730ddb5fd0e575d5237
1 file changed