[tklock] Move cached datapipe values in one place
[tklock] Move cached datapipe values in one place

Inter dependencies make it hard to have the variables next to the
datapipe callback functions.

Signed-off-by: Simo Piiroinen <6d5e5360bed3d486f7d9fb26b0f737f7d4fd45ee@jollamobile.com>

spiiroin/mce,spiiroin/mce,spiiroin/mce,spiiroin/mce