kernel/kvm tests are missing a 'needs_drivers' in their test definition

[cdm-work]

All of the KVM tests need the 'kvm' driver to be present (and loaded) in order for the tests to run successfully. This would normally be accomplished by having the following present in the struct tst-test test definition for each testcase:

static struct tst_test test = {
...
      .needs_drivers = (const char *const []) {
              "kvm",
              NULL
      },
...
};

None of the KVM testcases have this. This means that rather than skipping the test on a system where 'kvm' is not present, the tests are run and report a BROK instead.

As I hinted, it does seem that KVM can be present on a system but not loaded. As a result, tests still run would pass the above check, but they would still report BROK. However, I suspect that this particular additional issue is not as relevant to the project.

[pevik]

LGTM, would you mind to send a patch to our mailing list or a pull request?