kmstest: Implement simplistic propery support behind -P flag.
kmstest: Implement simplistic propery support behind -P flag.

Non atomic modesetting is not supported and there is no translation
from various property types to unsigned 64-bit integer. Instead the
property values are simply converted from string with stoull(str, 0, 0).

Signed-off-by: Tomi Valkeinen <e1ca4dbb8be1acaf20734fecd2da10ed1d46a9bb@ti.com>

tomba/kmsxx,tomba/kmsxx,tomba/kmsxx,tomba/kmsxx