This test loads ymm0/ymm7 registers and check if after
restore the contents is not changed.

The test requires xsave capability to present on the
test system, thus if we figure out that there is no
suitable cpu provided we skip the test.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>