README: add KMSXX_DEVICE & KMSXX_DRIVER
README: add KMSXX_DEVICE & KMSXX_DRIVER

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

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