ppc64le: rcutorture warns about improperly set `CONFIG_HYPERVISOR_GUEST` and `CONFIG_PARAVIRT`

[Paul Menzel]

Dear Sebastian, dear Paul,

In commit a6fda6dab9 (rcutorture: Tweak kvm options) 
`tools/testing/selftests/rcutorture/configs/rcu/CFcommon` was extended 
by the three selections below:

    CONFIG_HYPERVISOR_GUEST=y
    CONFIG_PARAVIRT=y
    CONFIG_KVM_GUEST=y

Unfortunately, `CONFIG_HYPERVISOR_GUEST` is x86 specific and 
`CONFIG_PARAVIRT` only available on x86 and ARM.

Thus, running the tests on a ppc64le system (POWER8 IBM S822LC), the 
script shows the warnings below:

    :CONFIG_HYPERVISOR_GUEST=y: improperly set
    :CONFIG_PARAVIRT=y: improperly set

Do you have a way, how to work around that?


Kind regards,

Paul