KVM: x86: Fix errant brace in KVM capability handling

The braces around the KVM_CAP_XSAVE2 block also surround the
KVM_CAP_PMU_CAPABILITY block, likely the result of a merge issue. Simply
move the curly brace back to where it belongs.

Fixes: ba7bb663 ("KVM: x86: Provide per VM capability for disabling PMU virtualization")

Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20220613212523.3436117-8-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>